PDA

View Full Version : 16 w/ 4.3L GPS at 59?????



Donziweasel
01-26-2009, 06:25 PM
Alright, saw a 16 on Ebay that was quickly removed. Before it was removed, the listing said it had a stock 4.3L in it and was GPS'd at 59 mph. I have never heard a 4.3L breaking 55. I have heard of 5.0L over 57 and 5.7 in the low 60's. Is it possible a stock 4.3L can run 59 mph? Just curious.

mattyboy
01-26-2009, 06:32 PM
ran with a 4.3 the high HP one in the lake george a few years back with a teenage driver, boat ran nice if you told me it was a 60 mph boat I wouldn't argue lot less weight than my setup

i thought the difference in HP from the 5.0 and 4.3 High HP was only 10 hp 220/ 210

The Hedgehog
01-26-2009, 06:33 PM
Alright, saw a 16 on Ebay that was quickly removed. Before it was removed, the listing said it had a stock 4.3L in it and was GPS'd at 59 mph. I have never heard a 4.3L breaking 55. I have heard of 5.0L over 57 and 5.7 in the low 60's. Is it possible a stock 4.3L can run 59 mph? Just curious.

No, you are dang right. If you add cam, exhaust, manifold and a 4 bbl you get around 60. Your numbers are right.

Now if my father does not finish his I will just go buy him a blower and do it for him.

DonziDan16
01-26-2009, 08:50 PM
The best I've seen from my 16 with a 4.3 is 51 gps. That's with stock 2bbl but I'm pretty sure there was a stock 4bbl version too. I think it would put it in the mid 50s, not upper.

Hopefully I'll be able to put some money away and make the swap to a 4bbl this season. I already have some pretty looking aluminum manifolds waiting to be installed :D

Lenny
01-26-2009, 09:15 PM
Dan, your Avatar is probably the best Sweet 16 picture ever put out there.

:)

Donzi Vol
01-26-2009, 09:40 PM
I'd say you could get one up to 80 mph...if it's behind a truck going down the road :wink:.

But seriously, I'm sure it wouldn't be easy, but I bet that one of you guys on here could pull it off. I mean, Hedgehog has already laid out the plan!

DonziDan16
01-26-2009, 09:53 PM
Thanks. It really is a great picture. I wish I could remember where I found it.

mike o
01-27-2009, 07:48 AM
A vortec 4.3/4 barrell, 210hp, with a alpha ss. You'd be way north of 60mph easy:yes:. I would have bought that new alpha ss on ebay last month..... If I could figure out how to bolt it to a gen II alpha, which has-can been done.:yes:

Sweet little 16
01-27-2009, 08:19 AM
that pic is from Michael's book it is a test drive and is an early 16 notice it is all wonder white, I could see a high 50's 4.3 16 every so often you get one that is wound tight and the hull is just right lighter less imperfections in the bottom aslighty higher X , I mean we have seen 22 with the same stock 496ho setup run mid 70's and other that run high 70's sometime things just come together


anyone know the difference in the weight from a 4.3 and the 5.0 ???

BigGrizzly
01-27-2009, 09:08 AM
Well Bill Bateman's 16 with the New Volvo and 4.3 a Solas prop:wink: would run right around 55 Mph here on Lake Lanier. I also clocked him with my GPS at 54 at the Eufaula event several years ago, just before Forrest wizzed by us at just 70 with his little Green Giant (is what I call it). Little ols 16 with a merc SS and a 302 Ford with a 450CFM holley on it.

DonziDan16
01-27-2009, 10:05 AM
A vortec 4.3/4 barrell, 210hp, with a alpha ss. You'd be way north of 60mph easy:yes:. I would have bought that new alpha ss on ebay last month..... If I could figure out how to bolt it to a gen II alpha, which has-can been done.:yes:


I'm not familiar with the alpha ss drives. What are the differences?

Sweet little 16
01-27-2009, 10:41 AM
the 4.3 mpi is a 220 hp motor the same as the base stock 5.0 with a difference of 81 lbs the 4.3 is lighter, not sure if that includes the difference in the exhaust manifolds. Volvo seems to get another 5 hp 225 hp out of their 4.3 GI ( stopped in 2001)

the base merc 4.3 is a 190 hp motor

Sweet little 16
01-27-2009, 11:00 AM
is this the boat in question??

http://cgi.ebay.com/ebaymotors/1996-DONZI-Sweet-16-102-Original-Hours-Mint-Pristine_W0QQcmdZViewItemQQ_trkparmsZ72Q3a727Q7c66 Q3a2Q7c65Q3a12Q7c39Q3a1Q7c240Q3a1308Q7c301Q3a1Q7c2 93Q3a1Q7c294Q3a50QQ_trksidZp3286Q2ec0Q2em14QQhashZ item160312109125QQitemZ160312109125QQptZFishingQ5f Boats


it has a 4.3 LX motor anyone have the specs from 96??? is that the high or low hp motor

well it has a hydrofoil and runs in salt so what's that worth a mph or 2 ????

DonziDan16
01-27-2009, 01:10 PM
I thought hydofoils usually slow boats down :confused: And why would he have a hydrofoil and trim tabs?

mattyboy
01-27-2009, 01:45 PM
well salt is good for a mph the hydrofoil takes it back, the 96 rating on the high HP merc 4.3 is 225 depending on carb , intake and exhaust so did it go
4.3L 190 hp and the 4.3 LX 225 hp?????

Donziweasel
01-27-2009, 01:48 PM
Thats the boat. Did they make a EFI 4.3L in 1996?

DonziDan16
01-27-2009, 02:56 PM
I messaged the guy and he verified it's the 220hp model.

If I made it to 51 with 175hp and he has 45 extra ponies that's about 4.5mph right?- 55. Let's say he didn't have the hydrofoil when he made that run and add 1 mph because of the salt water- 56. I would think there would be a mph or 2 difference between an OMC and a Merc outdrive so- 57/58? 59 seems a bit high but maybe on a really really good day? Or am I being too generous :boggled:

chappy
01-27-2009, 03:05 PM
I messaged the guy and he verified it's the 220hp model.

If I made it to 51 with 175hp and he has 45 extra ponies that's about 4.5mph right?- 55. Let's say he didn't have the hydrofoil when he made that run and add 1 mph because of the salt water- 56. I would think there would be a mph or 2 difference between an OMC and a Merc outdrive so- 57/58? 59 seems a bit high but maybe on a really really good day? Or am I being too generous :boggled:

Never can tell, maybe he was running down river. I read that can add a few mph, can anyone verify this?

Donziweasel
01-27-2009, 03:48 PM
I think he is full of it. The most I have ever heard out of a 220 hp 4.3L is 55. He is trying to sell a boat and it sounds to me like he is padding the numbers. BTW, the auction was a 2 day auction, guy must need to sell it pretty bad. When the boat first appeared, he stated on the ad that only 6 16 were for sale in the United States right now. BS. Maybe only on boat trader. Bet you could find dozens on Cragslist.

DonziDan16
01-27-2009, 03:49 PM
He says hes turning a 23pitch at 4750rpm. So...it would be possible...with 6% prop slip?

Donziweasel
01-27-2009, 03:50 PM
I looked up the 1996 4.3L LX. It was rated at 190 hp, not 220. Guy is full of it.

Plus, my 16 compensated for altitude, is around 300 hp. I am running 60. The difference is engine wieghts is 81 pounds. So, if he had 220 hp, with 81 pounds less than me, he is running almost the same speed? No way.

Now if he has the carbe 190 LX, which you can see in the picture, and the difference in engine weights is 98 pounds, there is no way he is running almost the same speed with 110 less hp and 98 pounds less weight. Mine is a 1997, so the boats should be identical.

Throw on the foil and he should be running 50-52 with the 190 hp.

Ask him if it is carbed or EFI.

1929rats
01-27-2009, 04:09 PM
I have a 220 4.3 in an '89 16 with a 4 barrel and thru-hull exhaust, and 50 is what I have realized.

Years ago I owned an '86 el camino with a 220 horse 4.3 in it, I put a paxton supercharger on the motor with a different cam and the car ran 13.00 with the tailgate down. I've been thinking about putting this setup on my boat this summer.

If everything goes right, It should realize 59-60 mph easily. Another 10mph on the water is pretty fast ---- or, should I say, fast enough for me...

Donziweasel
01-27-2009, 04:15 PM
I think the boat is a scam anyways and here is why.

When it first showed up a couple of days ago, it was listed by Zesty21. I e-mailed him about the speed and he said someone hacked his account and listed the boat. He alerted Ebay and reset his password. It showed up again last night listed by Hotcitytoy. Buyer be ware.

DonziDan16
01-27-2009, 04:39 PM
I have a 220 4.3 in an '89 16 with a 4 barrel and thru-hull exhaust, and 50 is what I have realized.

Years ago I owned an '86 el camino with a 220 horse 4.3 in it, I put a paxton supercharger on the motor with a different cam and the car ran 13.00 with the tailgate down. I've been thinking about putting this setup on my boat this summer.

If everything goes right, It should realize 59-60 mph easily. Another 10mph on the water is pretty fast ---- or, should I say, fast enough for me...

That would be one sweeeeet 16 with the paxton :yes: :thumbsup:

fogducker III
01-27-2009, 04:54 PM
I think the boat is a scam anyways and here is why.

When it first showed up a couple of days ago, it was listed by Zesty21. I e-mailed him about the speed and he said someone hacked his account and listed the boat. He alerted Ebay and reset his password. It showed up again last night listed by Hotcitytoy. Buyer be ware.


I think your half right John, I agree there is no way THAT boat is doing 59mph the way it is, especially with thru leg exhaust! If it was tweaked a little with straight exhaust, the right prop, get rid of those stupid Dol Fins (those are to help under powered boats get up out of the hole better) a driver, almost empty fuel and a tail wind, MAYBE..............

As far as the auction, yes it was listed before by a different seller name, same guy, he changed his name on the 24th Jan for some reason, he states in this auction he screwed up and removed the listing by accident, perhaps he was imbarrassed and changed his user name.......? Either way, he has been on Ebay since 2005, not sold much other than computer software and obviously is not that bright, bad listing and his response to questions is limited.......... but I think it is a legit auction:garfield::popcorn:

Donziweasel
01-27-2009, 05:10 PM
Jeremy, explain this, here is a copy of the email I got back when I asked about the speed-


Whomever you are this item was hacked into our ebay items. We did not place it there or know how it got there. This is why we removed it and changed our pass word and notified ebay. If you got a reply from some question you received I would love to know who you got it from.

Rich

fogducker III
01-27-2009, 05:21 PM
Was that on the first listing John?

I see that on the second listing he has responded on the auction to a question as well as responding to me via email...........? weird......

Just Say N20
01-27-2009, 05:34 PM
When the boat first appeared, he stated on the ad that only 6 16 were for sale in the United States right now. BS. Maybe only on boat trader. Bet you could find dozens on Cragslist.

14 Donzi 16 Classics on Craigslist and eBay right now, Including a 1967 for $3,500.

http://www.jaxed.com/cgi-bin/mash.cgi?cat=cpboat&itm=donzi&loc=&fil=16&ys=&ye=&submit=++++go++++

Donziweasel
01-27-2009, 05:41 PM
Jeremy, yeah, it was on the first listing. Definetly some strange goin's on's with this boat. Like I said, buyer be ware.

Here is the listing for the first time-

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=270332035075&ssPageName=ADME:X:RTQ:MOTORS:1123

Anytime you see a boat listed by someone who sells penis pumps, makes you kinda go, "what the hell?". I wonder if you get a free penis pump for buying the boat.:bonk:

Facts are,
1. Boat was listed
2. When asked a question, owner said it was a scam
3. Boat re-listed
4. Claims 59 mph
5. Claims 220 hp engine
6. Clearly from the pics, you can tell this is an 4.3L LX, which is rated at 190 hp.
7. Whether it is a real listing or not, guy is lying about the power and most likely the speed.

NJFASTECH
01-27-2009, 05:51 PM
Any chance he saw the one in delaware go off at 6000 and wanted to change reserve?

fogducker III
01-27-2009, 05:52 PM
:eek: you said penis...........


I agree though, the listing is strange, be interesting to see what happens, I am waiting for additional pics as we speak.........:wink:

gold-n-rod
01-27-2009, 06:43 PM
Per my sig, my 16 ran a solid 62 on GPS. It's a 260 horse MPI w/aluminum exhaust manifolds (-75# over stock) and a 21 pitch Turbo 1 prop.

I think the seller's (?) claim is B.S.

BigGrizzly
01-27-2009, 06:54 PM
I too think the speed is a dream. It took a long time to get bill to 55 and it would not do it all the time. BTW. Speed was done wit light fuel and only one aboard.

Donziweasel
01-27-2009, 06:58 PM
My fastest run with 300 hp and just me and 1/2 tank of gas was 60.8.

There is NO WAY IN HELL that boat with 190 hp 4.3 is getting near 60 mph.

Also, why a 2 day auction? On most high priced items, you want a week at least for exposure. And of course the "there are only 6 for sale" thing.

Nice boat, but not what it is listed as.

mattyboy
01-27-2009, 07:00 PM
so for future reference if the merc 4.3 LX is a mouth breather and 190hp what is the 220HP fuel injection motor called a 4.3 LXI 4.3 mag ????

Donziweasel
01-27-2009, 07:05 PM
Btw, if he has enough power to run 59 mph at 4800 rpm's, then why does he need the foil? My engine is 90 pounds heavier and it snaps on a plane with half throttle.

Donziweasel
01-27-2009, 07:09 PM
Matty, from what I found was in 1996 the 4.3L LX(190HP) and 4.3L LEFI(220hp).

mike o
01-27-2009, 07:25 PM
Matty, from what I found was in 1996 the 4.3L LX(190HP) and 4.3L LEFI(220hp)...........My 95 /4.3 with webber 4 barrel is 210 or 205 so they say. An alpha ss drive is a shorter racing-hi pro lower drive merc made for 3-4 yrs for the gen 1 alpha late 80's. Im turning a laser II 25p @4800 wot. That 16 on ebay not an efi, looks like my carb one.

mattyboy
01-27-2009, 07:32 PM
what drive ratio do they use for the v 6 1.8 something???? I would think the foil was to get rid of the mid range porpoise that comes with the 16 if the right prop is not on it

onesubdrvr
01-27-2009, 07:34 PM
what drive ratio do they use for the v 6 1.8 something????
Matty,

My OMC v-6 had the 1.65:1, but had the 4bbl carb option for like 210hp.

Wayne

mattyboy
01-27-2009, 07:51 PM
volvo uses the 1.6 and the 1.8 ratio for their v 6 apps i would assume merc uses the same. I mean my v 8 was turning a 1.6 think merc uses a 1.5 for theirs so a 190 hp merc should have a 1.8 drive and a 220 would be a 1.6 ??? is that logic correct????

onesubdrvr
01-27-2009, 08:02 PM
volvo uses the 1.6 and the 1.8 ratio for their v 6 apps i would assume merc uses the same. I mean my v 8 was turning a 1.6 think merc uses a 1.5 for theirs so a 190 hp merc should have a 1.8 drive and a 220 would be a 1.6 ??? is that logic correct????
Seems right to me ;) but whadda I know :D

Wayne

mattyboy
01-27-2009, 08:05 PM
mikeO

what ratio are you turning on the SS????

mattyboy
01-27-2009, 08:19 PM
the way i figure it @ 4800 rpm 1.6 ratio a 23 pitch prop at 10% slip would be 58.8???

mattyboy
01-27-2009, 08:57 PM
now the question would be is 10% slip average ??? or is it possible for a 190hp motor at 1.6 be able to spin a 23 pitch to 4800 rpm ????

I dunno but at least he knew who designed it and he spelled Don's last name right ;)

The Hedgehog
01-27-2009, 09:02 PM
I have a 220 4.3 in an '89 16 with a 4 barrel and thru-hull exhaust, and 50 is what I have realized.

Years ago I owned an '86 el camino with a 220 horse 4.3 in it, I put a paxton supercharger on the motor with a different cam and the car ran 13.00 with the tailgate down. I've been thinking about putting this setup on my boat this summer.

If everything goes right, It should realize 59-60 mph easily. Another 10mph on the water is pretty fast ---- or, should I say, fast enough for me...

That is a good idea. I like it

chappy
01-28-2009, 07:27 AM
now the question would be is 10% slip average ??? or is it possible for a 190hp motor at 1.6 be able to spin a 23 pitch to 4800 rpm ????

I dunno but at least he knew who designed it and he spelled Don's last name right ;)

Good call, it's always funny to read an ad that is for a sweet 16 designed and built by Don Arronnaw.:troll:

mike o
01-28-2009, 07:30 AM
mikeO

what ratio are you turning on the SS????.........I have not bought an SS yet... cause the of the retro fitting issue to a gen II thing-y. From what I understand you have to exchange the bell housing back to gen I, use gen I trim rams and modifiy the cle with a tiny relieve on the cle somewhere and change the shift linkage and ya got 6-8 mph increase in mph.:kingme: My 16 with 4.3/4 barrel with a 23 p that came with it, was hitting the rev limiter @5200ish and looking at the tack was a distraction aired out. So I bought a laser II 25 p and turns 4800-4900 completely aired out and I can just drive it. I have a 1.8 or 1.85 stock drive. I never gps it but Im 57-58ish, I think. Likes Ta - dance.:kingme::kingme::kingme:.

mattyboy
01-28-2009, 07:35 AM
Mike,
does sound like a bit of a PITA but everyone I know that went to an SS did gain 5 or more MPH

mike o
01-28-2009, 07:46 AM
Mike,
does sound like a bit of a PITA but everyone I know that went to an SS did gain 5 or more MPH... I guess its not if you have done it . So for 2k-2.5k for the drive and a little tinkering to get the mph increase. To repower to obtain 5-8 mph... what would that cost. A 6.2L 300+hp and changing the motor over and the gears in the drive down to 1.5. My thinking with the SS/ 4.3 package, Id have a fast 16 that was cheap to run with the fuel $$$ last summer.

DonziDan16
01-28-2009, 09:29 AM
The guy seems fairly knowledgeable about the boat...he even corrected me when I asked about the paint, saying it was not paint, but gel coat. Also said it was 4bbl, not efi...

It still seems a little odd though because of the first post...and the adult toys :eek:

mikev
01-28-2009, 10:22 AM
I don't have the same hull but going from a 2bb to the edlebrock / weber 4bbl i gained 400 rpms so i could do up from a 19 to a 21" prop. mine runs right about 48-50 I hit 5000 rpms with just me in it. approximate mph i havent used gps on it. As far as the hydrofoil my boat rides like crap without it and rides great with it eliminating porposing and pounding in rough water. Didn't change my top speed at all but I have a cobra version not a dolfin. I like the super charger idea it would be alot easier than a motor swap but have not found a setup for it what are you guys talking about Hedghog i know you were talking about doing this on you dad's 16.

The Hedgehog
01-28-2009, 10:30 AM
I don't have the same hull but going from a 2bb to the edlebrock / weber 4bbl i gained 400 rpms so i could do up from a 19 to a 21" prop. mine runs right about 48-50 I hit 5000 rpms with just me in it. approximate mph i havent used gps on it. As far as the hydrofoil my boat rides like crap without it and rides great with it eliminating porposing and pounding in rough water. Didn't change my top speed at all but I have a cobra version not a dolfin. I like the super charger idea it would be alot easier than a motor swap but have not found a setup for it what are you guys talking about Hedghog i know you were talking about doing this on you dad's 16.

So far the best idea seems to be using the small block package made by Vortec. There is a company that builds carbs that will take a hat. It is either the hat or having to make your own carb box because space is tight around the distributor. That should put the V-6 right into the 70's.

Here is a little V-6 bling for you.

mattyboy
01-28-2009, 10:37 AM
nice, very nice Hedge :yes:

a few years back at the fall picnic at lake george we took a boat trip down to the village the adirondack national hot rod show is there the same time and we saw a guy who was selling blown motors he had a 350, a hemi motor and a 4.3 chevy 6 cyl every hour he would fire one up as a sales pitch
the v 6 sounded real nice

I'll see if i have pics of that motor not sure if it would be a good marine motor ??

mike o
01-28-2009, 12:11 PM
So far the best idea seems to be using the small block package made by Vortec. There is a company that builds carbs that will take a hat. It is either the hat or having to make your own carb box because space is tight around the distributor. That should put the V-6 right into the 70's.

Here is a little V-6 bling for you....thats a honey.:yes:

The Hedgehog
01-28-2009, 12:27 PM
...thats a honey.:yes:

Thanks. You have got to bling out the V-6. I have done a good bit of homework on the issue. I see screamer potential

BUIZILLA
01-28-2009, 01:13 PM
Thanks. You have got to bling out the V-6. I have done a good bit of homework on the issue. I see screamer potential :kingme: :yes: :pimp:

Lenny
01-28-2009, 01:40 PM
Here is a little V-6 bling for you.

a plastic fuel filter ???

:eek:

The Hedgehog
01-28-2009, 01:47 PM
a plastic fuel filter ???

:eek:

I think it is part of the shift interrupt. It does need to be more pleasing to the eye though.:yes:

DonziDan16
01-28-2009, 05:50 PM
Thanks. You have got to bling out the V-6. I have done a good bit of homework on the issue. I see screamer potential

I thought this article was pretty cool http://www.hotrod.com/techarticles/engine/113_0208_chevy_43l_262ci_v6_engine_build/index.html

The Hedgehog
01-28-2009, 06:10 PM
I thought this article was pretty cool http://www.hotrod.com/techarticles/engine/113_0208_chevy_43l_262ci_v6_engine_build/index.html

Followed by a little:

http://www.hotrod.com/techarticles/engine/113_0210_43l_chevy_v6_vortechs_supercharger_instal l/index.html

The Hedgehog
01-28-2009, 06:26 PM
Of course you would want to take advantage of the nice cool water and use an intercooler.

I lost the info on the carbs that work with hats in a blow through application

DonziDan16
01-28-2009, 06:28 PM
Followed by a little:

http://www.hotrod.com/techarticles/engine/113_0210_43l_chevy_v6_vortechs_supercharger_instal l/index.html

:yes:

Gotta get me one of those :pimp:

fogducker III
01-28-2009, 07:33 PM
http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&rd=1&item=160312726505&ssPageName=STRK:MEWA:VRI

Its back..............$8900 Buy it Now.............:eek:

Donziweasel
01-28-2009, 07:53 PM
102 hours on a 1997 in pristine condition for 8900.00, 3 day auction, I still think something is funny.

The Hedgehog
01-28-2009, 07:57 PM
102 hours on a 1997 in pristine condition for 8900.00, 3 day auction, I still think something is funny.

It does sound funny.

Donziweasel
01-29-2009, 12:20 PM
It disappeared again. Something ain't right.

mattyboy
01-29-2009, 12:52 PM
if you click on the link posted by sl16 in this thread it says the auction ended and the item or one like it has been re-listed and if you click on it it takes you to the boat again then it says it is no longer for sale????.

I don't think the hours make this boat funny, I have seen boats with less hours than years old but the disappearing and reappearing thing makes me wonder ??

I agree something ain't quite right

ficomax
03-15-2010, 08:34 PM
Alright, saw a 16 on Ebay that was quickly removed. Before it was removed, the listing said it had a stock 4.3L in it and was GPS'd at 59 mph. I have never heard a 4.3L breaking 55. I have heard of 5.0L over 57 and 5.7 in the low 60's. Is it possible a stock 4.3L can run 59 mph? Just curious.
I just redo a 4.3 with high compression pistons, computer balance, I get 55 mph in the GPS 1995 just as the same in the picture. I change risers & manifoulds by the aluminium ones, I get off aproxx 150 lbs. I send the boat for new upholptery, since I brought the boat never had the rear & side board side long seat. How those seat stay so neat in the rear to the fiberglass just by the snap buttons, or there is a placiglass hard surface in the rear part attach to the vinyl to keep them in place?? I get 5250 rpm with a 23p, with a 25p I think i can get 60 mph if the motor get to 5,000 rpm.

The Hedgehog
03-15-2010, 08:46 PM
I just redo a 4.3 with high compression pistons, computer balance, I get 55 mph in the GPS 1995 just as the same in the picture. I change risers & manifoulds by the aluminium ones, I get off aproxx 150 lbs. I send the boat for new upholptery, since I brought the boat never had the rear & side board side long seat. How those seat stay so neat in the rear to the fiberglass just by the snap buttons, or there is a placiglass hard surface in the rear part attach to the vinyl to keep them in place?? I get 5250 rpm with a 23p, with a 25p I think i can get 60 mph if the motor get to 5,000 rpm.

You should get that 60.

ficomax
03-15-2010, 09:47 PM
I just redo a 4.3 with high compression pistons, computer balance, I get 55 mph in the GPS 1995 just as the same in the picture. I change risers & manifoulds by the aluminium ones, I get off aproxx 150 lbs. I send the boat for new upholptery, since I brought the boat never had the rear & side board side long seat. How those seat stay so neat in the rear to the fiberglass just by the snap buttons, or there is a placiglass hard surface in the rear part attach to the vinyl to keep them in place?? I get 5250 rpm with a 23p, with a 25p I think i can get 60 mph if the motor get to 5,000 rpm.
Can someone tell me how those seat are set so nicely to the fiberglass , just by the snap buttons????