Thread: My 97 GTP McLaren tribute car

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  1. #21 Re: My 97 GTP McLaren tribute car 
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    Quote Originally Posted by BuckeyeGT View Post
    Very sharp looking car and sounds good too.
    Thanks. The sound is due to a unique exhaust system I custom built. It has equal length header secondaries, and to my knowledge it's the only one of it's kind. In person it sounds absolutely wicked. I love it.
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  3. #22 Re: My 97 GTP McLaren tribute car 
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    [IMG]20160617_193321[/IMG]
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  4. #23 Re: My 97 GTP McLaren tribute car 
    Killa Bee Scottydoggs's Avatar
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    you need to host the pics vids what have you off site. you cant upload from your pc to here, its a crap fest of failure.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  5. #24 Re: My 97 GTP McLaren tribute car 
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    Thanks, I both love... and hate computers.
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  6. #25 Re: My 97 GTP McLaren tribute car 
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    Here's a pic of my exhaust system:

    Last edited by NSTGP1; 06-23-2016 at 01:57 PM.
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  7. #26 Re: My 97 GTP McLaren tribute car 
    Killa Bee Scottydoggs's Avatar
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    thats pretty cool looking, but why the big U turn on the one pipe? dont that hit the ground?

    does the cross over part come off? or is it all welded in place there? and your only reading the front 1/2 of the engine with the o2 sensor like that. not a huge issue tho.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  8. #27 Re: My 97 GTP McLaren tribute car 
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    The "loopy part" as I call it is to add extra length to the rear bank of cylinders, to make up for the front banks exhaust having to travel up and over the tranny. That is what makes it equal length. That's the key to taking away all the rasp and cackle from these engines and making them sound good. It doesn't scrape the ground. I "massaged" it mid loop to gain a little ground clearance where it passes under the frame rail. The front crossover piece is clamped on, as is the downpipes to "loopy" section and cat converter section. I wanted to be able to change out components at will. And yes the computer gets O2 readings from the front bank only, but it's not an issue. I ran it by one of the guys at ZZP before I started working on the system. Here's a pic with the front bank piece detached.



    Last edited by NSTGP1; 06-23-2016 at 03:09 PM.
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  9. #28 Re: My 97 GTP McLaren tribute car 
    Turbo is the way to go. REDCRAPGP's Avatar
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    Interesting

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    Squirrels are my engine. I need a Ford Regal
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  10. #29 Re: My 97 GTP McLaren tribute car 
    Regal GS Level Member BoostedPontiac's Avatar
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    Is this car still around?
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  11. #30 Re: My 97 GTP McLaren tribute car 
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    Yes, I drive it several times a week.
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  12. #31 Re: My 97 GTP McLaren tribute car 
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    The 5th gen crosslace wheels look great on there as well at the other TGP touchese. The exhaust/headers is some piece of artwork! Sounds very nice like those couple 3800 Camaro's on youtube running crossover pipes. Out of curiosity though, what made you decide to Y it into one cat after you spent all the time and money with the custom headers & piping instead of keeping it true dual?
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  13. #32 Re: My 97 GTP McLaren tribute car 
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    Great question. There's a few reasons why I ran it into a 3"cat.
    1. Budget, time, hassle. Continuing two separate pipes all the way back to the rear would have required more resources than I wanted to at the time.
    2. Space. Fitting two pipes around the fuel tank and rear control arms is tight. I know it can be done because I've seen pictures of it, but i didn't want to tackle it.
    3. Sound. I experimented with different exhaust components and found that the 3" resonated cat made the car sound the best. These engines need to have equal length secondaries and then be tied back together in order to sound their best. Google or YouTube "Formula Holden". One of the rules for the cars was that each side of the exhaust had to be tied together before it exited out the back. Series officials wanted it that way because it made the cars sound less obnoxious. All the Busch Grand National race cars from back in the day tied together before exiting as well. I test fitted an equal length true divorced dual system on my car and it was OK at idle, but as soon as I took off it sounded like a pair of three-cylinder chainsaws buzzing around. Just curious, is anyone else working on something like this that you know of? Thanks for the comments. Cheers
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  14. #33 Re: My 97 GTP McLaren tribute car 
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    Also, all those 3800 powered Camaros and Firebirds you mentioned have equal length headers and H or X pipes tying the two sound pulses together. That's why they sound 10 times better than a typical 3800 car. It's not the 3800 that sounds bad in our cars, it's the unequal length exhaust system.
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  15. #34 Re: My 97 GTP McLaren tribute car 
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    Very good info. I kinda figured if it came down to needing 2 cats it would get a lot more pricey. I didn't even know about Formula Holden, but that's pretty awesome. At one point I was wanting to experiment with redoing the piping on my SLP exhaust, but I ended up throwing on a lightly used loudmouth II that my buddy took off his GTO as a resonator. Doesn't sound this cool, but still happy with it
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