AlbatrossCafe Posted November 12, 2018 Share Posted November 12, 2018 Hey guys, Just wanted to let you know how my Gpop shop turbo rebuild went in case anyone was looking at going to them: http://gpopshop.com/ Before: 1982 L28ET Garret AiResearch stock T3 turbo After: Upgraded into T3/T4 hybrid with T4 .50 trim compressor wheel and Stage III exhaust turbine. All moving components rebuilt/replaced if applicable. Review: So far, I am very satisfied with their work. When they said "we will make your turbo like new" I was skeptical. They took my 35 year old turbo and genuinely made it better than it was when it was new back in 1982. Externally, it looks great. I decided to have Gpop upgrade my stock turbo because I didn't want to deal with fabbing up external wastegates or put in spacers to get something aftermarket to fit. The cost (~$900 btw) was comparable to buying a new Garrett hybrid and in the end I get something that I know will bolt right in AND has a warranty to boot. Also, their customer service was awesome. I say "Externally, it looks great" cus I haven't finished putting together my engine yet 🙃 I'll update the review with actual performance "soon"! Quote Link to comment Share on other sites More sharing options...
softopz Posted November 16, 2018 Share Posted November 16, 2018 Looks very good! its all going to be worth it in the end Quote Link to comment Share on other sites More sharing options...
Chickenman Posted November 19, 2018 Share Posted November 19, 2018 Before you go too far. Get that exhasut manifold off and send it out for Ceramic coating on the exterior. Well worth it. Ceramic coating the Turbine housing when it was at GPop would have been a good idea. But a Good Turbo balnket should suffice. Ceramic coating on downpipe is nice as well. Don't know whose car this is... but VERY well thought out heat management. the custom SS heat shield between Intake and exhaust manifolds is Ceramic blanket insulted on bottom side. Gold reflective foil would work as well. Note even the TIP is insulted. Quote Link to comment Share on other sites More sharing options...
Chickenman Posted November 19, 2018 Share Posted November 19, 2018 (edited) Carbon Fiber shroud around stock Nissan fan . Insulated fuel lines. Smart cookie this guy 👍 Edited November 19, 2018 by Chickenman Quote Link to comment Share on other sites More sharing options...
AlbatrossCafe Posted November 19, 2018 Author Share Posted November 19, 2018 (edited) 10 hours ago, Chickenman said: Before you go too far. Get that exhasut manifold off and send it out for Ceramic coating on the exterior. Well worth it. Ceramic coating the Turbine housing when it was at GPop would have been a good idea. But a Good Turbo balnket should suffice. Ceramic coating on downpipe is nice as well. I'm not looking for 400hp performance. Looking for a modest ~280hp or so. Seems like coating the ex. manifold would be overkill? A blanket is easy enough, I can add that to the turbo Edited November 19, 2018 by AlbatrossCafe Quote Link to comment Share on other sites More sharing options...
Dat73z Posted November 20, 2018 Share Posted November 20, 2018 The turbo looks great 👌. Maybe consider a shield instead of a blanket too. They have some bolt-on solutions or I've seen some posts online about people making one from a dollar store pot. https://www.supraforums.com/forum/showthread.php?326366-DIY-Turbo-Heat-Shield-write-up-with-pics Quote Link to comment Share on other sites More sharing options...
Chickenman Posted November 20, 2018 Share Posted November 20, 2018 (edited) On 11/19/2018 at 8:53 AM, AlbatrossCafe said: I'm not looking for 400hp performance. Looking for a modest ~280hp or so. Seems like coating the ex. manifold would be overkill? A blanket is easy enough, I can add that to the turbo Ceramic coatings, heat shields and Turbo blankets are not just for performance. Their main function is to decrease the HUGE heat soak problems that the Turbo L-series suffer from. Performance increases are secondary, but nice. Having the Turbo and exhaust manifolds directly under the Intake manifolds is just not ideal at all. Even on a mild build, you will have issues if you do not pay careful attention to heat management. Exhaust manifold and Turbo temps vary little between a 250hp engine and a 400HP engine. Overall heat is very similar. Edited November 20, 2018 by Chickenman Quote Link to comment Share on other sites More sharing options...
AlbatrossCafe Posted November 22, 2018 Author Share Posted November 22, 2018 (edited) On 11/20/2018 at 3:09 PM, Chickenman said: Ceramic coatings, heat shields and Turbo blankets are not just for performance. Their main function is to decrease the HUGE heat soak problems that the Turbo L-series suffer from. Performance increases are secondary, but nice. Having the Turbo and exhaust manifolds directly under the Intake manifolds is just not ideal at all. Even on a mild build, you will have issues if you do not pay careful attention to heat management. Exhaust manifold and Turbo temps vary little between a 250hp engine and a 400HP engine. Overall heat is very similar. So don't think I can pony up for ceramic coatings, but I used heat wrap on the downpipe and ex. manifold and added a blanket to the turbo. Now I am reading that using wrap on exhaust manifolds is a bad idea... Something about it causing the steel to become hotter than it would if it just vented normally and causing it to crack. What do you think ? Is a heat wrap not recommended? How come the stock engine did not use it if it was so necessary? Edited November 22, 2018 by AlbatrossCafe Quote Link to comment Share on other sites More sharing options...
rossman Posted November 22, 2018 Share Posted November 22, 2018 Don't think heat management is important? Check this, skip to 22:00 Quote Link to comment Share on other sites More sharing options...
softopz Posted November 22, 2018 Share Posted November 22, 2018 Heat wrap does wonders. The stock turbo manifold heat shield between intake also helps thats what Im running. Quote Link to comment Share on other sites More sharing options...
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