SoCal Jet Boats
Tech Talk => Engine Mechanical / Electrical => Topic started by: beefy85 on September 03, 2014, 11:24:01 AM
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So I found out my boat has an exhaust leak and talking with the previous owner he had issues with the junky logs blowing threw gaskets! Can you boys recommend a header or type of exhaust I can switch to and still run the engine cover? Also I want to add an little bigger cam and was wondering what you all suggested?
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What exhaust do you have currently? The through bolt/Long bolt style work the best to keep manifold surfaces true without warping. I would look for a set of those, probably going to be the cheapest route as an offshore style header is $$$. You can look into through transom tube headers but most work similar to the over transom which require water injection and thats one more thing to worry about if you ask me.
HB
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I have the crappy style non thru bolt logs! I'm not worried about the water injections I can handle that! Just need references! Thanks!
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Try Jim brock
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What moto u have what heads any work done on em. This is my cam I make 9.6 to 1 470 horse with 22cc dish pistons pump gas friendly dove heads ported polished 2.20 intake valve 1.73 exhaust
Sent from my SPH-L900 using SoCal Jet Boats mobile app
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Oops forgot cam card
Sent from my SPH-L900 using SoCal Jet Boats mobile app
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Not sure on pistons and yet to do a compression test! Where did you have port and polish done?
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Try Jim brock
how do I contact him
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What moto u have what heads any work done on em. This is my cam I make 9.6 to 1 470 horse with 22cc dish pistons pump gas friendly dove heads ported polished 2.20 intake valve 1.73 exhaust
Sent from my SPH-L900 using SoCal Jet Boats mobile app
does this cam need screw in studs and after market springs?
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I picked mine up from Jim done already but you can Google high flow dynamics and call Paul Kane he told me once I could by a set of dove a heads(better combustion chambers) for 14-1500 poted polishef ready to run. or 2200+ tax for aluminum heads and use the search bar for Jim Brock or looks in parts for sale he bumped some stuff yesterday I believe
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does this cam need screw in studs and after market springs?
I have studs n springs and roller rockers on mine. Your heads are horse power thieves I use to have the same
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I have studs n double springs and roller rockers on mine. Your heads are horse power thieves I use to have the same
Sent from my SPH-L900 using SoCal Jet Boats mobile app
Sent from my SPH-L900 using SoCal Jet Boats mobile app
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I run the same heads... have the smog hump ported/removed an weld up the hole... I have scorpion non adjustable roller rockers on em to... work bitchn.
(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fi897.photobucket.com%2Falbums%2Fac178%2F2ndlight%2F4663_zps7016a446.jpg&hash=2016b35b895af13f97717a4920fdb7f0039e3caf)
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I run the same heads... have the smog hump ported/removed an weld up the hole... I have scorpion non adjustable roller rockers on em to... work bitchn.
(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fi897.photobucket.com%2Falbums%2Fac178%2F2ndlight%2F4663_zps7016a446.jpg&hash=2016b35b895af13f97717a4920fdb7f0039e3caf)
what size cam
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I wanted a reliable motor an have log exhaust. Stainless valves, forged pistons, stock crank turned, stock rods (football/oval)... cam is schneider 284-88h-12. Runs 5200 with an A imp. Be careful on cam selection if your running log exhaust... Reversion is a bitch.