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GCG has been building stock frame G25-550 and G25-660 turbos: https://gcg.com.au/turbo-charger-g25...t-evo-4-9.html
One of these with an Artec cast manifold could be an easy and reliable setup. |
Originally Posted by Construct
(Post 11971132)
GCG has been building stock frame G25-550 and G25-660 turbos: https://gcg.com.au/turbo-charger-g25...t-evo-4-9.html
One of these with an Artec cast manifold could be an easy and reliable setup. |
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With modern vband turbo tech, Stock frame is only a consideration for autocross IMO.
G30-770 with the Artec manifold on my car. We finally hit the dyno with it. 32psi on E85 for 670 wheel. |
I'd agree, if the cumbersome real estate and heat issue was as "resolved" as a stock frame setup. That being said though, 5500 for JUST the turbo when you can get a whole vband top to bottom for 6k....
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Originally Posted by Balrok
(Post 11971166)
I'd agree, if the cumbersome real estate and heat issue was as "resolved" as a stock frame setup. That being said though, 5500 for JUST the turbo when you can get a whole vband top to bottom for 6k....
Artec mani + FP black would probably be a pretty sweet combo for street/track. But as sean said, AX ends up with its own special needs. |
Originally Posted by Balrok
I'd agree, if the cumbersome real estate and heat issue was as "resolved" as a stock frame setup. That being said though, 5500 for JUST the turbo when you can get a whole vband top to bottom for 6k....
There also isn't a heat issue with good ceramic coat. |
Originally Posted by black E
(Post 11971154)
But $3500++ is hard to swallow for just the turbo!
It's only a couple hundred dollars more than the FP stock frame turbos with MHI housings, so I don't think it's out of line. I also like the ability to swap back to the stock or another stock frame FP turbo quickly if I want to target a different class or if the turbo breaks. |
Getting a replacement quickly is easy when you're using an off the shelf turbo like a Garrett. It's the main reason we went away from using stock frame stuff in the race program. If a turbo fails we don't have 8 weeks to wait on a new on most times.
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Originally Posted by Ayoustin
(Post 11971108)
Is your Garrett not reverse rotation?
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Originally Posted by LetsGetThisDone
(Post 11971113)
I'm not sure why that would be a hang up. The packaging/fitment is much better with the RR turbo.
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Alright guys, it's time to get my jalopy back on the road. There are some maintenance items that need to get taken care of to include fluids, fuel system flush and cleaning, tires, water pump, and a timing belt. I haven't autocrossed in 3 years due to losing the best lot in the metroplex at Texas Motor Speedway (thanks covid). The other lot that's become the primary has a very rough asphalt surface including cracks that will cause wear up the shoulders of the tires from hitting them while turning. So, I'm not sure how much auto-x I'll be doing locally here but may get into track days to utilize Eagles Canyon and Motorsport Ranch Cresson. With this in mind I'm looking for advice on some upgrades as I like not having to worry about issues. My questions are:
1) Should I remove balance shafts? I don't plan on pushing my existing setup any more than it already is. I'm fine with the limiter where it's at as well. It's on Torque Solutions trans, roll stopper, and cam side mount if NVH with these is an issue (I don't want my car falling apart from bolts backing out). 2) I'm probably going to get an Infinite Evo pan plus a Tomei scraper. I've had a Kiggly HLA installed for 4 or 5 years now. Should I inspect and possibly replace front case & oil pump? The car has 8X,XXX miles on it and for the last decade and 15,XXX miles has primarily been an auto-x car. 3) If I remove balance shafts should I get the ER oil pump gear? 4) Is there anything else I should be looking at? |
it's an evo, so make sure you have a towhook
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Originally Posted by Terror Rising
(Post 11971296)
Alright guys, it's time to get my jalopy back on the road. There are some maintenance items that need to get taken care of to include fluids, fuel system flush and cleaning, tires, water pump, and a timing belt. I haven't autocrossed in 3 years due to losing the best lot in the metroplex at Texas Motor Speedway (thanks covid). The other lot that's become the primary has a very rough asphalt surface including cracks that will cause wear up the shoulders of the tires from hitting them while turning. So, I'm not sure how much auto-x I'll be doing locally here but may get into track days to utilize Eagles Canyon and Motorsport Ranch Cresson. With this in mind I'm looking for advice on some upgrades as I like not having to worry about issues. My questions are:
1) Should I remove balance shafts? I don't plan on pushing my existing setup any more than it already is. I'm fine with the limiter where it's at as well. It's on Torque Solutions trans, roll stopper, and cam side mount if NVH with these is an issue (I don't want my car falling apart from bolts backing out). 2) I'm probably going to get an Infinite Evo pan plus a Tomei scraper. I've had a Kiggly HLA installed for 4 or 5 years now. Should I inspect and possibly replace front case & oil pump? The car has 8X,XXX miles on it and for the last decade and 15,XXX miles has primarily been an auto-x car. 3) If I remove balance shafts should I get the ER oil pump gear? 4) Is there anything else I should be looking at? I'd only consider removing the balance shafts if the car isn't being street driven much. NVH increase is fairly noticeable but if it's rarely driven on the street and can handle more NVH then pulling the shafts makes the engine more simple, pulls over 5lbs from the front of the car and reduces rotational mass of the engine. There are no performance downsides to removing them. |
1) I always ditch the balance shafts. I check bolts pretty frequently and only really see the two end nuts on the exhaust mani back off. I also have stock motor mounts on the sides and rear and just solid on the front.
2) Yes, you need the infinity pan. You only need to replace the front case/oil pump if you're seeing idle pressure dropping in the low 10s. 3) Im not sure if the ER gear would be needed with the oil pan and external regulator. The regulator also fixes somewhat what the oil gear fixes. One benefit of the gear though is to get back some length offset from an increased deck height of the 4G64. I think is roughly equivalent to half cam compensation. 4) If you doing more track stuff, heat is the enemy. Logging at a minimum oil temp and AIT for safety are needed. T-case would also be good, that seems to be the hottest part on the ER endurance car. |
Originally Posted by Ayoustin
(Post 11971304)
How much power does the car make and what tires is it on? Giving the pump a look over is not a bad idea. The ER gear will help oiling but involves adjusting timing so you'll need adjustable cam gear(s). Depending on power and tires you may not need to throw the whole kitchen sink at the car to keep the bearings in it. I'd only consider removing the balance shafts if the car isn't being street driven much.
Originally Posted by Dallas J
(Post 11971305)
1) I always ditch the balance shafts. I check bolts pretty frequently and only really see the two end nuts on the exhaust mani back off. I also have stock motor mounts on the sides and rear and just solid on the front.
2) Yes, you need the infinity pan. You only need to replace the front case/oil pump if you're seeing idle pressure dropping in the low 10s. 3) Im not sure if the ER gear would be needed with the oil pan and external regulator. The regulator also fixes somewhat what the oil gear fixes. One benefit of the gear though is to get back some length offset from an increased deck height of the 4G64. I think is roughly equivalent to half cam compensation. 4) If you doing more track stuff, heat is the enemy. Logging at a minimum oil temp and AIT for safety are needed. T-case would also be good, that seems to be the hottest part on the ER endurance car. |
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