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Tidbart
06-25-2008, 07:12 AM
Anyone know the dimensions of the mounting studs on the sides of the merc elbows? Or, where I can get them? The merc microfiche doesn't show them as a seperate item.
They look like 1/4-20 on the outside, maybe 1/4-24 on the elbow side??, Length?? Having hard time getting studs out of the old exhaust, thought it would be easier to just put new ones in the new exhaust.

Thanks, Bob
MOP
06-25-2008, 11:53 AM
Bob are you talking about the accessory studs for the pack and shift converter? If so I believe they are 14-20 both ends, cast iron does not hold fine thread very well.
Tidbart
06-25-2008, 01:32 PM
Thanks Phil
This would be alot easier if I could one of the damn things out.:wink:
B
MOP
06-25-2008, 02:55 PM
Thanks Phil
This would be alot easier if I could one of the damn things out.:wink:
B

Bob I am not sure but I think they may Loc Tite them, I never had any luck getting them out. I gave up years ago and just went to the parts bin, if I was in a hurry I would cut some bolt heads off and dress the ends down and Loc Tite them in.

Phil
Tidbart
06-25-2008, 09:06 PM
Tried again, not budging. Will grab some 1/4-20 x 1-1/2 tomorrow.
No big hurry. Put engine in last night, waiting on alignment tool to finish the job, then I'll put on the exhaust.

B
MOP
06-25-2008, 09:12 PM
Ah pretty close to start up time, is it a roller or flat tappet cam engine?
Tidbart
06-25-2008, 09:13 PM
Gen VI, roller.
Tidbart
06-25-2008, 09:17 PM
why do you ask, Phil?
MOP
06-25-2008, 09:23 PM
If it was a flat tappet you need to spin it higher at initial startup to lube the cam and lifters, either one needs a few good hard pulls early on to set the rings. No engine like a babying break in, not saying to beat it but push it a bit don't baby it you will get better service out of it.
Tidbart
06-25-2008, 10:01 PM
That is exactly what the engine builder said. Don't baby it.

B
BUIZILLA
06-26-2008, 07:26 AM
i've never seen an engine babied on a dyno

a dyno is a water brake device

a boat engine and drive is a water brake device

IOW, run it as hard as you can
MOP
06-26-2008, 01:55 PM
I have seen some that were babied, most turned out bad. One was an oil puker and the ruined a really nice Esky cam & lifter setup. Really the only thing you are breaking in is the rings.