Suggest a turbo for 300+rwkw out of a 4age
Im building up a AE86 trackster and have to goal of 300kw or more in mind.
At the moment im looking at what turbos will give me this sort of power at what boost as well as when they start spooling?
Has anyone here had a play with larger turbos on the 4AG block?
Yes I know that there will be a large amount of lag to the point of people saying it will be undrivable but I will be putting measures into place to combat this so don’t every one keep bringing this up.
What sort of boos can the 4AG blocks handle? Im trying to guage if I should grout and sleve my block to handle the higher pressure.
If any one can help here its much appreciated.
Hi , fully rebuilt a/f parts on 4agze smallport bottom end , bigport head with works - custom inlet manifold ,cams/gears + 70mm t/b compression around 9.4:1 and with a/f ecu can yield 269kw on 23 psi. Thats with gt30 series turbo and custom .49 rear. Lag is up to around 0rpm to 4000rpm and full boost by 5500rpm.
This setup would be horrible on the street and this is in FWD format also.
Should give rough idea of the 300kw mark
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you could almost make 300rwkw with a 3071.. But easist and best option if you are chasing that much pwoer is get a 3076 52trim with .78 divided rear housing. basically a HKS 3037. but the divided housing helps it sppol better... Always go for divided housing when you get a 3071 or 3076. Means abit more stuffing around but ppl who have done it swear by it..
You'll need a good head/vavle job and some decent sized cams 264 ect.. go to much bigger cam than that and it gets laggy (ier)..
No idea about block strenght... I know they're heavy for how small they are.
Depends on the aplication to... don't really want to grout fill it if you plan to use it often.. sure it would create cooling issues.. A good crank girdle probably wouldn't go astray either..
And I still would expect full boost till after 5000rpm.
reece.. would that have been a t28 .49 housing machined to suit the 30 series dimentions...????
I think that probably would have made it worse for lag. especially if the exhaust wheel had to be trimmed alittle to fit the housing...
On a completely different topic...
4age at 8000rpm moves 12800000cc of air a minute. (this is totally rough as this changes with everything)
SR20 at 6500rpm moves 13000000cc of air..
Rough idea of the air flow through the engines... you could work them both out at the same RMP, get the percentage difference and then work out the boost threshold for a certain turbo buy taking known info on there results on an Sr20 engine..
I doubt a 3071R would get up to 300rwkw on a 4A, even with alternative fuels.
3076R as a minimum, but probably a 35R. It will be so fucking boring to drive though, and when you do get on boost you'll need warmed semis to keep traction even in 5th. You'll probably still need to run E85 or some form of race fuel to keep detonation at bay, because you'll be running a fair bit of boost (25-40psi).
What measures are you planning to keep lag at bay? Nitrous i hope?
And at 300rwkw you are definitely at the stage of cracking the block. You will most definitely need sleeves (and someone in aus that actually has lots of experience with installing them <- this will be the harder bit).
300rwkw !! holly shit.... is this robbie bolger ??
lol at white people in japan. just lol.
OMG.. 35r would be sooooooooooo sloooooooooowwwww... Would be a complete was of time. you be beaten by someone runing a $300 second hand t28..
Toxin I never said a 3071 WOULD make 300.. I said it would get close.. and They easily make that much on e85... ppl are make 270-289kw with 2871 on e85 (sr20 though)
why not run sr? if it's going to be a track car then i dare say you'd be much better off.... 300 on an sr has been done many a time
2jz can do 800hp on stock internals, would be cool if a 4age could hold half that. One dude in Perth filled his rb30 block 30% with grout and said it made no difference to cooling performance.
I take it you are going to run anti-lag and you should probably run a variable geometry turbo. It will make boost early enough that way.
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