Maybe some input from you seasoned guys regarding motor
04-10-2015, 09:37 AM
#12
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http://www.airflowresearch.com/index.php?cPath=68_72
I believe those are the heads that are being worked up for me. I'll have to verify with Bob tomorrow.
They indicate the exhaust port is raised .375"
They also indicate 1" longer head bolts needed on four bottom exhaust bolt holes?
I believe those are the heads that are being worked up for me. I'll have to verify with Bob tomorrow.
They indicate the exhaust port is raised .375"
They also indicate 1" longer head bolts needed on four bottom exhaust bolt holes?
04-10-2015, 10:07 AM
#13
Since you have a 502 block you should have blind bolt holes for the head studs - good thing because sealing head studs in water jackets can be a pain. Sounds like you have a good package going together. Are you planning to have it dynoed? I highly recommend it, or at the very least, run the engine on a startup cart prior to dropping it in the boat. I discovered a reversion issue that I did not expect doing this with mine. Glad I discovered it on the test stand instead of in the boat!
04-10-2015, 01:18 PM
#14
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Since you have a 502 block you should have blind bolt holes for the head studs - good thing because sealing head studs in water jackets can be a pain. Sounds like you have a good package going together. Are you planning to have it dynoed? I highly recommend it, or at the very least, run the engine on a startup cart prior to dropping it in the boat. I discovered a reversion issue that I did not expect doing this with mine. Glad I discovered it on the test stand instead of in the boat!
04-10-2015, 03:52 PM
#16
04-10-2015, 03:58 PM
#17
I have found the stock Merc seawater pump to be more than adequate. You could put out a 3 alarm fire with the water those things move. I would advise adding a water pressure gauge and also an oil temp gauge.
04-10-2015, 07:06 PM
#19
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Since you have a 502 block you should have blind bolt holes for the head studs - good thing because sealing head studs in water jackets can be a pain. Sounds like you have a good package going together. Are you planning to have it dynoed? I highly recommend it, or at the very least, run the engine on a startup cart prior to dropping it in the boat. I discovered a reversion issue that I did not expect doing this with mine. Glad I discovered it on the test stand instead of in the boat!
04-10-2015, 07:14 PM
#20
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As far as I've seen they do.
In fact, had a customer with headgasket issues. Turned out, block+heads where milled a good amt, and his bolts where stopping before it was squeezing the heads down far enough. Gots some thicker washers and all was okay. That was an azz kicker to figure out.
In fact, had a customer with headgasket issues. Turned out, block+heads where milled a good amt, and his bolts where stopping before it was squeezing the heads down far enough. Gots some thicker washers and all was okay. That was an azz kicker to figure out.
