🔧 BUILD PJ's 2004 Cobra racecar build

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PJx5x

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Sep 29, 2005
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  • #26
    Started to reverse engineer the cam last night. No clue what cam is in this thing, only said "custom sbf cam" on the receipt. Gay.

    Working with LJMS to determine if it will work with my setup. Otherwise will be ordering a new grind through him

    Measured .750" intake and .780" exhaust lift [emoji51]

    2880f6dcbeac8fcea01e9589b20293c0.jpg
     
    FESTER665

    FESTER665

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    Streamwood
  • #36
    Stupid question, are the holes in the front of the heads for the coolant? I was thinking about doing a 2828 intake down the line, but always got confused on how to hook up the coolant to the motor without the thermostat mounting in the front of the intake.

    I assume like a standalone thermostat housing and then -an fittings to the heads?
     
    GIMPY

    GIMPY

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    Feb 21, 2009
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  • #37
    PJx5x said:
    Nope. Top end came from Gino and it was all assembled by AES. Welds look like poo but at least they're all straight. I'm gonna be doing some surgery on the intake anyways, I may grind them down and lay some dimes lol
    Click to expand...

    Only reason I ask is because it looks like they forgot to put hold downs for the fuel rails on it lol. Unless I'm not seeing something in the pictures. But yeah welds look like poo. Probably cuz they never prep the material before welding. Grind them down and go over them. Just don't focus heat on the bung. Let it wash on to it. I've done a good amount of efi conversions at a shop I worked for and those things love to blister on the inside
     
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    PJx5x

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  • #38
    GIMPY said:
    Only reason I ask is because it looks like they forgot to put hold downs for the fuel rails on it lol. Unless I'm not seeing something in the pictures. But yeah welds look like poo. Probably cuz they never prep the material before welding. Grind them down and go over them. Just don't focus heat on the bung. Let it wash on to it. I've done a good amount of efi conversions at a shop I worked for and those things love to blister on the inside
    Click to expand...

    Youre correct, there are no hold downs lol. It came with a hold down bracket that got sandwiched under the throttle body elbow. I sold that immediately, and will weld tabs on somewhere later.
     
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    PJx5x

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  • #39
    BADAZZTEALCOBRA said:
    Stupid question, are the holes in the front of the heads for the coolant? I was thinking about doing a 2828 intake down the line, but always got confused on how to hook up the coolant to the motor without the thermostat mounting in the front of the intake.

    I assume like a standalone thermostat housing and then -an fittings to the heads?
    Click to expand...

    The coolant ports are on the front/back of the heads under the masking tape. That's specific to Neal type heads. I looked up the 2828 intake and it looks like it has a pipe thread hole on each corner of the intake. There are multiple options for that (connecting the back two with a crossover or not) and using an external thermostat housing split to the 2 fronts.

    This motor isn't going to have a thermostat, Im not even sure if ill need to run coolant through the heads or not (block is full fill). I hope to learn some more about that at PRI next weekend. I have no experience with alcohol motors yet :ugh:
     
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    PJx5x

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  • #41
    98GrandPrixIraqVet said:
    mmmm alcohol engine you say huh?

    kick ass more specs on the engine then!

    crank up the compression or what is it at and how about fuel system?
    Click to expand...

    Motor info on post #17. Compression is 10.5:1 and I don't have the funds to raise it any higher lol. Gotta work with what I was given.

    Fuel system Im not completely sure what is needed yet- but Im guessing something around a 15gpm belt pump and 550# injectors
     
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    PJx5x

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  • #47
    Well I survived another PRI and made it home with some new toys. I picked up a pair of used turbos- Precision 8285s. They're rated at 1300+ hp each

    Picture with mandatory size reference can:
    82f131012ddaeca475f8f3dc4cafbfb5.jpg



    Unfortunately callies said the magnum crank in my motor is only rated to 1800-2000 hp. I'm not completely thrilled about risking it, but I'm not sure if I'm ready to blow $3500 on a billet crank.
     
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