SoCal Jet Boats
Tech Talk => Projects => Topic started by: roost on March 02, 2015, 09:49:12 PM
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I've started building the 545 for Slowride and am at the point of picking heads. The first limiting factor is the exhaust.... namely the Harman long bolts. Has anyone tried opening them up to CJ/SCJ port size and is there enough meat to do it? I'd like to run P51's or FMS SCJ-B's, but if I can't it's RPM's. :'(
I'm overbuilding in case I want to go play in another hull, but for now I'll under carb and under cam it so it'll live in the cruiser.
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Step 1 - get a D9TE block with a fresh .030 bore and toss a spare AirGap on it.
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Step 2 - Scour the internet for the absolute lowest price on Super Cobra Jet heads (Tommie Vaughn Performance), and get them coming :thumbup:
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Hehe
[attachimg=1]
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Looking good...keep it up.
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She's very purdy. :thumbup:
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Got a couple deals courtesy of couple board members. Got another set of Harman long bolts that will be modified so they can be port matched to CJ exh ports. The top of the ports will need about a 1/4" of fill (on the outside) to raised the port roof to match.
A bit more oil capacity sure isn't gonna hurt
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A little more stuff
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Dude I'm gonna hit you up for some advice when I build one of these
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Spec'ed out the cam today, price is excellent for a custom grind. Why a custom grind? Trying to get 600 horse out of long bolts...... :screwy:
No worries though, it'll be under the engine cover and the only way you'll know it's in there is the lope in the no wake zones..... :thumbup:
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Looks like that cover is gonna have to be a little wider than it probably was originally. :thumbup:
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Looks like that cover is gonna have to be a little wider than it probably was originally. :thumbup:
Kinda snowballing that way, huh? Good thing there's no nitrous going on it.....
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Spec'ed out the cam today, price is excellent for a custom grind. Why a custom grind? Trying to get 600 horse out of long bolts...... :screwy:
No worries though, it'll be under the engine cover and the only way you'll know it's in there is the lope in the no wake zones..... :thumbup:
Care to share the specs? What grinder?
Looking forward.
Cheers,
Joe
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Details soon. The supplier is getting with the grinder to fine tune the exhaust side. With this grind being a split duration and lift, we can get around the logs to a degree. Need duration, but be aware of reversion. There's a lot going on with the fine details of this build, just want to make sure it's done right the first time.
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Cool, can't wait
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Here's the cam specs
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That seams really mild for such a big motor..or am i just a big cam whore? Pretty close to the cam in my 402
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That seams really mild for such a big motor..or am i just a big cam whore? Pretty close to the cam in my 402
Sent from my MB860 using SoCal Jet Boats mobile app
It seems like most of us have had the same introduction into performance engines...... basically a stock engine that we "hop up". Put on an intake, headers, maybe a cam, but what we've learned was how to make more horsepower by trying to minimize engine shortcomings. How many engines are actually purpose built matching components? We would use a cam with more lift to compensate for heads that didn't breathe well. Put heads on with bigger valve and flow better you don't need as much lift.
I'm only looking for 600 horse with reliability which is why some parts of this appear to be over kill. Need a forged crank? Rods? SCJ heads? It ALL about the combo....
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Are you planning on dyno time? If so, with the logs?
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The plan is to break it in on the dyno, dial in the carb, and make a couple pulls. Don't know if we'll be able to run it with the logs. That'll depend on the shop and if it can be plumbed.
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Should be getting the rotating assembly any day, got the QF950HP, and the new pump should be finished in a couple days.
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Oh oh :thumbup:
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Had to upgrade the pump a bit. Hope I have enough horsepower . bwahahahahahaha
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Figured I'd get a little finish work done before it goes to the machine shop. Harland Sharp rockers and a few beers to customize the wires.
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I am building a stroked too! Ford yo! You are my hero!
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Back from the past! Been awhile, but somebody's building this for me (finally). Not saying who yet, but you all know the name. It'll take a few weeks, but then swap the engine and pump in the cruiser. It's going to break 60 if it kills me...... :banghead: