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Thats really close to that fan! Prob burn it up in short order even with a heat blanket on it. Maybe switch to a beefy pusher? Never was a big fan of that placement. pulls in hot air and its close to everything. I get u may not have alot of options though. Move radiator up a tad?
Thats also massive hot side piping for your goals. You can literally run mild steel 16g 2" OD piping to each side of that turbo and have PLENTY of flow. Easier to package and cheaper to boot. Making 850-900ish whp with a divided 2" setup. On everything from a 292" to 370" engines.
Hi,
the crappy fan shroud is removed now so the fan sits a further 1" towards the front.
2" sch10s is free...😁 2" sch10s log with 1.5 sch 10 s from each port
no room to move radiator and have a intercooler 3" , part installed so far upfront
Dont know whether to run single or dual wg yet though. Only want 500 to 550hp rw and nice tq boost. 6 to 8 psi?
may box in air filter with cold feed from below if i can....somehow....
regards
gav
Aw noooo, dont tell me this now....
turbo was only £100 new unused.
More picies
i thought with 2" sch10 s log it would lite up ok...? What do you think it will start making boost 3000rpm?? Or lower?
wastegate or wastegates is the question.
regards
gav
If you're sweating 100 pounds when doing a boosted LS setup, you better get used to it The billet 76 65 will light off much quicker and make better lowend torque than a GT42, but itll run out of breath before the GT42.
If you're sweating 100 pounds when doing a boosted LS setup, you better get used to it The billet 76 65 will light off much quicker and make better lowend torque than a GT42, but itll run out of breath before the GT42.
you mean gt45 or gt42?
thanks all for advice though. I cant get that turbo for that price in UK so stuck with what i can get easily or then its £500++ from shipping etc etc.
what do you think my setup will spool like with 4"dp to 2x3" to sidepipes...?
thanks all for advice though. I cant get that turbo for that price in UK so stuck with what i can get easily or then its £500++ from shipping etc etc.
what do you think my setup will spool like with 4"dp to 2x3" to sidepipes...?
Your link in the first post didn't work for me, I thought you meant GT42. The GT45 is a cheap turbo. Its rated at 600fwhp. You get what you pay for. You could always try it and see how it does, but there are smaller turbos that would work better.
Yes was originally looking at turbonetics hurricane or the likes of, but all ends up expensive in uk.
it is a gt45 1.05.
just looking on ebay there is loads of them now for uk £ 150
Do you think i could put a 44mm wastegate on the turbine housing....? Would that control boost if it would fit under bonnet.......
then if turbo takes a crap i could just buy another and swap the exhaust housing?
open for all ideas.
Would spin it to 6000rpm.
will review if people think it wont spool until 4k+....
regards
gav
Yes was originally looking at turbonetics hurricane or the likes of, but all ends up expensive in uk.
it is a gt45 1.05.
just looking on ebay there is loads of them now for uk £ 150
Do you think i could put a 44mm wastegate on the turbine housing....? Would that control boost if it would fit under bonnet.......
then if turbo takes a crap i could just buy another and swap the exhaust housing?
open for all ideas.
Would spin it to 6000rpm.
will review if people think it wont spool until 4k+....
regards
gav
What is expensive to you? How much is import (%) from an individual in the US? 6000 rpms, low boost, and "low power" are all screaming for a smaller turbo. You don't have to spend a ton of money on a Turbonetics, Borg, Precision, etc. I can cut you a deal on the 7665 that is in great shape. You shouldn't really swap exhaust housings with drastically different size wheels, etc. I don't like wastegates on the turbine housing directly, but you do what you have do to get it to fit. That is of course just my opinion.
Never bought used before but get hammered for 20% plus, plus shipping weight etc, then on top of that the local shipping seem to charge extortunate prices sometimes and nothin other times....?
bought a pigtail for t56 from states, cant remember but maybe 14 dollars turned into 53 dollars.....its crap!
Nothing wrong with a used turbo as long as it's in good shape. Pm me if you want to investigate. Having seen your goals and having ran that turbo I think it would suit your needs perfectly. People complain that the turbo runs out of steam at high rpm or higher boost....neither of which is a concern for you. 6000 rpms and 10 psi or less would be golden for that turbo.
The GT45 is a great unit for the price. It will make power and be a fun setup I'm sure. Your small hot side diameter will help, as will your cubic inches. I doubt it will have much lag. If it's what you got, run with it! Just letting you know if you run into space issues or want somehign lighter weight with more response, there are better "cheap" units out there.
The GT45 has a few drawbacks. Its heavy and physically much larger than most turbos in it's class. Makes packaging a pain. ESP when you are dealing with hot parts next to your wiring/radiator/etc. It has old wheel tech and a pretty large AR and exhaust wheel. It will spool slowish compared to the units we are talking about. While it has a nice capable exh wheel, the compressor is a bit undersized. So the advantage of the bigger exh wheel is kinda negated by the tiny compressor. Also the rated "AR" is BS IMO. Put that 1.05ar next to any other 1.0 AR housing T4 and it's huge. Physically it looks larger than my 1.24 T4 housing. Also its going up in demand. I bought my last gt45 for $115 shipped.
Thanks all, will keep posting picies on progress if that is ok as its my first and hopefully last turbo build.
if i ever want more then i will have to forge engine and then just up boost as there will be more in the gt45?
My rear tyres will be a problem, currently on 13yr old Eagle f1 255 40 17 which can loose grip in 1st and 2nd without carefully rolling into it. Wish i could get r888r in 255 45 17 which is the optimum size for my cobra kit. 275 40 17 wont fit and cant get in uk anyway....
morel of story i will need stickier rubber.
treating whole prejoct as a challenge (and it bloody is...) but it wont be the most efficient out there but just fun and an achievement!
Ddnspider, thanks but will run with what i have but please dont be offended and i read quite alot of your posts for advice etc.
regards
gavin
Hi,
Another picie.
Will duplicate on other bank.
do you think one tial 44mm on each bank off that first 90 degree will cope with 5 to 6lb of boost? So one on each header...? Then a 50mm tial bov?
i know i will need heat sheilding btw.
regards
gav
Looks great! if a bit over sized! lol. Yes i think 2 44's will easily control the boost. I have 38's and with "10 lb" springs and am right at 8-9 with the lines directly to the bottom of the gates. Smaller springs I think 5-6 wouldn't be an issue, even with 38mm.
Last edited by Forcefed86; Oct 5, 2020 at 01:51 PM.
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The billet 76 65 will light off much quicker and make better lowend torque than a GT42, but itll run out of breath before the GT42. 
