Thread: Cruisin's RX-8 L67 Swap

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  1. #21 Re: Cruisin's RX-8 L67 Swap 
    I live here. Slick2500's Avatar
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    Quote Originally Posted by BillBoost37 View Post
    How about flipping V6 F body manifolds like FurchesPerformance does and putting it out front?
    Didn't Qfast or whatever his name is with the turbo camaro use modded zzp plogs?
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    Superchargers take away horsepower
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  2. #22 Re: Cruisin's RX-8 L67 Swap 
    I live here. Slick2500's Avatar
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    Quote Originally Posted by Cruisin38 View Post
    I'm not sure how you mean, Any pics or links? The F-body manifolds both work perfect is it's lower, it moves the coolant thermostat housing forward and makes turbo plumbing easy


    One of my main goals was to stay away from a V8. I originally considered 4cyl engines like Nissan's SR20DET. Eventually V6's starting popping up.


    Ha, Me Too!!!



    Was looking at the F-Body manifolds. Everything looks good, I'll likely need the LIM, Upper/plenum. Fuel rail and MAYBE the throttle body...
    Can anyone confirm if the F-body's have the same throttle body as the GTP's?
    Then I gotta close up the injector holes in the heads.
    Some of the fbodies used drive by wire throttle bodies iirc. But the cable ones were the same as the l36 tb irrc.
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    Quote Originally Posted by The Sunfire Guy
    Superchargers take away horsepower
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  3. #23 Re: Cruisin's RX-8 L67 Swap 
    SE Level Member Cruisin38's Avatar
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    Quote Originally Posted by Slick2500 View Post
    Some of the fbodies used drive by wire throttle bodies iirc. But the cable ones were the same as the l36 tb irrc.
    Ah good. My only real concern is rather the flange is the same and if i'll run into any issues with the coolant passages if they happened to changed them. If anything I can just weld em shut ha
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  4. #24 Re: Cruisin's RX-8 L67 Swap 
    GTP Level Member smoke14's Avatar
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    I can't wait to see vids and more pics. I would have never thought of swapping an L67 into and RX-8
    "You know, all that really matters is that the people you love are happy and healthy, everything else is just sprinkles on the sunday."

    -Paul Walker
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  5. #25 Re: Cruisin's RX-8 L67 Swap 
    Killa Bee Scottydoggs's Avatar
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    Quote Originally Posted by Cruisin38 View Post
    Ah good. My only real concern is rather the flange is the same and if i'll run into any issues with the coolant passages if they happened to changed them. If anything I can just weld em shut ha
    the lim fits just fine. 3800's are all the same really. the blocks are all identical. like a n/a block has the threaded holes for the super charger pulleys and all.

    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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  6. #26 Re: Cruisin's RX-8 L67 Swap 
    SE Level Member Cruisin38's Avatar
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    Oh the manifolds I wasn't worried about. Just the TB fitting.
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  7. #27 Re: Cruisin's RX-8 L67 Swap 
    The Blue One blueguy's Avatar
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    You could have always modded the firewall and ran a 180* U shaped intake pipe off the blower inlet and ran the TB next to the blower case itself.

    Turbo is worlds better though.

    As for the motor...been there done that. If you don't have a machine shop take care of the work on the mains, you'll be lucky to get 100 miles out of it. I say while its out, do it right. Not that much work since its on a stand...and you can stud it. Which will be better in the long run regardless.

    Cool swap though. I always liked the track capabilities of the RX-8.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
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  8. #28 Re: Cruisin's RX-8 L67 Swap 
    SE Level Member Cruisin38's Avatar
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    Can anyone provide more info about the motors not lasting after a bearing swap?
    I mean, you bolt the mains down to have it line bored, wouldn't removing the mains to install the internals make it "twist" again causing it to knock? What am I missing?
    Multiple people have told me on here to expect knocking, but I can't seem to find much info on this phenomenon...

    I'm not trying to argue with anyone. I'm just looking for more details.
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  9. #29 Re: Cruisin's RX-8 L67 Swap 
    Killa Bee Scottydoggs's Avatar
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    theres a bunch of threads where guys did the rebuild and they blew up asap.

    if you get it align honed it will be ok. like stated, the block will twist when you take the crank out.

    and then you may as well get the crank cut. cause your there already.

    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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  10. #30 Re: Cruisin's RX-8 L67 Swap 
    SE Level Member Cruisin38's Avatar
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    Well I guess I'll keep looking.
    To be clear I didn't pull the crank, just the rod and main caps.

    I'll do more research and see what I come up with.
    Thanks for the info!
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  11. #31 Re: Cruisin's RX-8 L67 Swap 
    Killa Bee Scottydoggs's Avatar
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    once you unbolt the mains it twists.

    how does it spin now? nice and easy? or a bit hard?

    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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  12. #32 Re: Cruisin's RX-8 L67 Swap 
    SE Level Member Cruisin38's Avatar
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    Spins perfect now. Nice and smooth, doesn't bind or tighten up at any point at all.
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  13. #33 Re: Cruisin's RX-8 L67 Swap 
    Killa Bee Scottydoggs's Avatar
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    maybe you'll get lucky....only one way to find out, go pro and a right foot thats angry lol

    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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  14. #34 Re: Cruisin's RX-8 L67 Swap 
    SE Level Member Cruisin38's Avatar
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    Ha! Well I can assure you it'll get plenty of abuse. We'll see how this one ends up.

    Guess that can explain why GM added the side main bolts that go through the sides of the block in series 2...
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  15. #35 Re: Cruisin's RX-8 L67 Swap 
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    Are you going to ever run it on SC or go straight to turbo?

    Funny people mentioned the block twisting. My factory l67 ate the front main journal and killed the oil pump. I replaced the crank with a 10-10 ground one because it was a little scored. Replaced the mains and rods with no line boring. Ive got probably 15K+ on this engine and no problems.

    News to me!

    This thread is more proof GM makes the best rebuild kits for blown rotaries!
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  16. #36 Re: Cruisin's RX-8 L67 Swap 
    SE Level Member Cruisin38's Avatar
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    Quote Originally Posted by Gutless View Post
    Are you going to ever run it on SC or go straight to turbo?

    Funny people mentioned the block twisting. My factory l67 ate the front main journal and killed the oil pump. I replaced the crank with a 10-10 ground one because it was a little scored. Replaced the mains and rods with no line boring. Ive got probably 15K+ on this engine and no problems.

    News to me!

    This thread is more proof GM makes the best rebuild kits for blown rotaries!
    I did originally want to run it supercharged first, then go turbo once the rest of the car is done.
    But as my buddy and I figured, I'd spend the time and money to modify it, only to undo it and throw that money in the trash to then turbo it, Since being turbo'd was the ultimate goal in the long run.
    He found a T4 turbo he had, so I'm going to use that, then swap to a bigger turbo down the road most likely,
    assuming it doesn't knock ha.

    I have read about the front end of the crank not getting oiled very adequately, hopefully I won't run into issues.
    Some people may have had issues, some may have not.
    My plan is to run it as I have it and see what happens. If it knocks, then oh well new engine time, if not then awesome! time to run it hard! haha


    and yea good point. More GM engines are ending up in these RX-8s hahaha
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  17. #37 Re: Cruisin's RX-8 L67 Swap 
    GTP Level Member chris99gtp's Avatar
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    sub'd. Where you at in Northern Illinois?
    99 gtp- Burnt and gone
    01 gtp- Here to stay-3.4, SD Headers, AL104's HAI, Overkill PCM, SD Hood
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  18. #38 Re: Cruisin's RX-8 L67 Swap 
    SE Level Member Cruisin38's Avatar
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    Quote Originally Posted by chris99gtp View Post
    sub'd. Where you at in Northern Illinois?
    About an hour north of Chicago. Real close to the IL/WI boarder
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  19. #39 Re: Cruisin's RX-8 L67 Swap 
    GrandPrix Junkie ItHurtz's Avatar
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    eish that puts you real close to me, I dont like people near me
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  20. #40 Re: Cruisin's RX-8 L67 Swap 
    SE Level Member Cruisin38's Avatar
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    Then you should move to the middle of Nebraska or Utah or something...
    heh Antioch. I spend quite a lot of time around there.
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