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Just to be clear, my thinking is that if I have to buy a new manifold, I'd rather get a newer one, for four barrel because it sounds like a 4bbl runs a lot smoother at idle.
The little 3 bbl POS on there now is new and it still won't idle worth a crap. I'm sure I'm doing/not doing something...
Would you happen to have more info on those edelbrock manifolds and vortec heads?
Would this qualify for the head?:
https://www.ebay.ca/itm/154738290665
How about this for the manifold?
https://www.summitracing.com/parts/edl-2111
I had something similar and it turned out to be the exhaust "Y" wasn't properly sealed in the back. Had to pull the engine out to re-do it, but once you get the engine out it's a pretty striaghtforward job.
Hi all, I used the wrong bolt that was too long on my thermostat housing and when I torqued it down it cracked my manifold.
It looks like for about the same money (or not a whole lot more) as a used original, I can buy a new intake manifold and 4 barrel carb.
Can someone recommend models...
Ya, just to wrap up the thread, it looks like it was just the flywheel. Once I got it tightened down the noise went away.
Thanks everyone for the responses!
Ok, so pulled engine out put on stand, flipped over and removed oil pan. Everything looked very good. There was a little bit of surface rust on one of the crankshaft counterweights, so little it basically rubbed off with a paper towel.
Nothing appeared wrong with the bearings etc. Nice and...
No no leak on intake I could see, and used a new gasket when I put it back together. This is a very jarring, metallic sounding knock/thump. Water definitely got into the engine so I'm thinking you may be right about the lower end.
Planning to pull engine back out today and have a look.
Hi all,
I'll hang around and help others to the best of my ability if you can clue me in on what might be wrong with my engine/drive.
Boat in canada at Dad's, me in US. Put new crate engine from Summit racing in back in 2019, broke it in properly, only about 50 hours on engine. Then covid...
Hello,
My name is Rich and I'm up here in BC with an '89 SeaRay with an OMC Cobra 4.3 in it.
I have a leak.
It only leaks with the engine running, and I have traced the leak down to the little wide U-shaped are just below the Exhaust T and above the transom plate.
Has anyone else seen...
