35r 20v 4agte

[350hp4agte]

hey guys.

I want to run a 35r instead of my t2871r basically I’m a power junkie i no allot of you guys aren’t but i am.

i have no idea how to read or even what I’m looking at in regards to compressor maps and turbine charts and all that so I’m struggling to find what 35r to use what rear housing etc

have any of you seen or had a 35r on a 4a b4

or can anyone shed some light on the subject

basically i want the most minimal lag i can with a 35r but i want to make around 400 atw

any info / feedback would be great

[DRFTR86]

fatke on here had a gt35r, i believe it had a .86 rear housing, not to sure about the front tho, its a massive turbo. was meant to be for a vl to run 10s. on a 20v it will look near on the size of the motor

[GEMTA22]

What spec motor do you have, internals, cams ?
What ecu are your running at the moment, and how much power you making.

Pulling 400rwkw out of a 4a, isnt going to be driver friendly.

[350hp4agte]

the motor isnt running yet as in hasnt been started its built engin specs below

Engine: 20 valve st

weisco forged pistons 8.9:1 30thou over
Argo rods
ACL race series bearings
ARP head, crank and rod studs
Cometic steel head gasket
The head has been extensively ported
Has yager performance valves and valve springs
Kelford cam, cams
JUN adjustable cam gears
550cc usdm 2j injectors
Magnafuel regulator
T2871RS disco with .64 rear ar (will be externally gated tial 44mm gate)
HALTECH E8 ecu
LS1 coils

Drive line:

W57 supra box
Ajps bell housing
Internal slave (as in no clutch fork thing it’s all inside the box )
Direct clutch performance 5 puk unsprung brass button
Mick’s performance clutches lightened flywheel
Diff is a modded hilux with 4.3 gears r31 shafts, discs and brakes

[fantapants]

he he he, i think i was just about to suggest you go talk to a guy who has done something kinda mad.... think his name was 350 something :)

anyways.... i got nothing else. forget the compressor map, just aim for what the sr guys do but work on running it to 9000 at least. wont get boost till about 5500 on a GREAT manifold.

not in a rood way, is it a dyno queen? or driven?

i have seen a MASSIVE turbo setup on a 4a with a tiny lil guy running of a wastegate screamer and some fancy plumbing. The wastgate was run full open to bring the lil fella up real quick, but he ran out of puff at 5000. by then the big fulla was just about ready to go, and a gate switched inlets :)then he ran to like 9500. Took ages to sort it out, and it was fairly agricultural... not shiny and not refined, but fucking hilarious to drive :)

[350hp4agte]

hahaha na not a dyno queen man i figure I’ve got the engine hardware to run a big turbo so why not its got cams and valve springs so reving to 9000 wont be a drama

i grew up around the drags man in rotors mainly with mazfix. tim crease, grant dixon, lang racing and all those boys, i did build my car for drift but with the intension of dragging it as well. i cant see why with a .86 rear it wouldn’t spool up by around 4000

i also figure that yeh a t28 will spool up fast around 3000 rmp but it will only make power to about 6800 to say 7300 were a 35r will come in around say 4500 and make power right up to 9000 or more so i guess it just means i'll have to rev the fuck out of it. isnt that what there ment for anyway?

[sundee]

i reckon if your going for that kinda power from a 4a... id twin charge it.. with a .82 rear housing i dont think u will see boost untill 6000 rpm.. i had a similar turbo on an sr.. so thats an extra 400cc capacity and it had 12mm lift cams w/ adj gears and it wasnt hitting boost untill 3800... i think u should look at a differnt turbo... instead of going outright power and loosing everything else.. there may be a comp/ext housing combo and desired trim that will give u back some of your mid range. if it was just for drag then y not.. but street driven it will be a pig.

here is a comparison.
GT3037s
http://gcg.com.au/turbo/ViewProduct.aspx?ProductID=7

and your GT35(82)r
http://gcg.com.au/turbo/ViewProduct.aspx?ProductID=18

look at both specs.. the 3037 pro s is good for 525 (390 something KW) the 35r would be atleast a 600hp turbo.. so that would get u up around 450kw. TO much man!!

the 35r is way bigger in all respects.. and if u want to run the 35R with a non rediculous sized exhaust housing it has to be V band.

35R is way to big...3037 is even pushing it on a 1600cc engine.. but it would be doable i think.. u should call up GCG or the like and see if u can get a 3037proS with different trim options so's to optimise your power band.

[Justin Holden]

GT35 is fine

Guy over in nz is running a gt35/40 make 350kw

another guy is running prescision gt30/71r making over 300kw as well

Not much lag, you jsut have to make sure your hard up it form the get go

give kent a ring on 0064 9-425 7030

He will point you in right direction

It can be done and works alot better than you would think, 4age breath easy so gettign it to spool is easy

[350hp4agte]

400hp lets get that right and cheers sundee thats sort of what i was after i dont have to go 35r i was just wanting some feed back on big turbo's or bigger turbo's than a t28 i do think 6000rpm is a bit hi tho but your opinion i'll let you have it

cheers keep it coming

[sun_moon]

powerband from 6k on..... would be like driving a 2zz celica ^_^

[sundee]

it was a bit of a wild stab, ok so mayb 5000... but it wouldnt be far off

[350hp4agte]

GT35(82)r
http://gcg.com.au/turbo/ViewProduct.aspx?ProductID=18

/\/\/\/\/\ this turbo comes in a .63 rear housing nice

[Gilly]

Hey Mitch

i have a GT35R .86 rear housing (35/40) on my SR, it's pretty laggy, starts to build at 3500 but has the full 19psi at 4500. hits like a sledge hammer. I'm only making 244 rear wheel kw's but the turbos good for over 300.

Not overly sure how it would go on a 20v, even with a real short cooler pipe tract it will be a lag monster. once it's going though hold on!! pay attention to your diff gears this may be a good way to keep the revs up.

[350hp4agte]

yeh true true im sorta starting to think now that the 3037s with a smaller rear housing is the go i'll hit up gcg see what they say

cheers for the info

[350hp4agte]

so i did no and have always known but my t2871r can produce inough air for 460hp what the most people have seen from this turbo on a 4a

[Simon-KE70]

yes well as with most garret turbos the same turbo is offered in several different trim spec's. the common 2871R with cropped ex wheel to suit SR's is a good thing, but not the best when it comes to max power. there are other garret options that with an uncropped exhaust wheel and correct housing size, can make huge power. (but wont be in T2 flange)

[350hp4agte]

i have the 460hp version with a .63 rear

[sundee]

so i did no and have always known but my t2871r can produce inough air for 460hp what the most people have seen from this turbo on a 4a

all depends on the wheel/trim and housings, as said garrett offer different options within the range.

ive got a garrett turbo on my 20v sitting in my garage.. its custom.. GT2861SPL... on 18 psi the 20v knocks out 220rkw.. that may give u something to go by


400hp lets get that right and cheers sundee thats sort of what i was after i dont have to go 35r i was just wanting some feed back on big turbo's or bigger turbo's than a t28 i do think 6000rpm is a bit hi tho but your opinion i'll let you have it

cheers keep it coming

whoops missed the HP.! hehe


Hey Mitch

i have a GT35R .86 rear housing (35/40) on my SR, it's pretty laggy, starts to build at 3500 but has the full 19psi at 4500. hits like a sledge hammer. I'm only making 244 rear wheel kw's but the turbos good for over 300.

Not overly sure how it would go on a 20v, even with a real short cooler pipe tract it will be a lag monster. once it's going though hold on!! pay attention to your diff gears this may be a good way to keep the revs up.

their u go... its on full boost at 4500 on an sr... so the 20v would be around 5000 on full swing.. and as gilly said watch out for that sledge hammer! by crap it would be hairy!

[350hp4agte]

yeh your right im thinkin about the 3037s now with a small rear housing i.e. .63 if they come with one, i emailed gcg last night so i'll see what they say

[sundee]

let us know what they say man.

[70XIN]

GT35R flows enough for 400rwkw

GT3082R flows enough for 350rwkw

Both will be shit. Your car will be so un-fun you'll sell it in a couple of weeks.

You can still get around the ~300rwkw (10sec 1/4) zone with a TD06-20G, GT3037S, GT3071R, GT3076R .. don't go any bigger. These will still be "laggy", but you can still have alot of fun off the drag-strip/highway :)

[jay70]

my mate has a 35/40 on an rb25, 406hp atw, its fairly laggy on that so i imagine it would be worse on a 4a. fucking hauls on boost but

[Simon-KE70]

TD06-20 has to be by far one of the best turbos for 300 rwkw. Ive got a mate with one on an RB25 and it makes 320 rwkw on 16 psi, and full boost is at 3450 rpm, the thing is so responsive and goes like hell. thats with stock cams and stock cam gears.

I had a GT3071R with a .71 AVO rear housing, making 280 rwkw on 17 psi on my rb25, full boost at 3500, and i had cams and cam gears, but shit it was pretty good to drive. If i had the cash i would go the trust kit any day.

[350hp4agte]

so by the sounds of things 3037s is the go gcg never got back to me so maybe tommorow ill give them a call still keen to here or see power figures with a t2871r . 63 rear

TOXIN and everyone else its 400hp so around 300kw im aiming at, high to mid 10 sec pass and 4th gear skids at qr

[Simon-KE70]

what front wheel is on your 2871r?

btw turbo's are rated at flywheel hp not rwkw, and then some are quite optimistic so dont go hoping your turbo will make 300 + rwkw when in actual fact it may never do it.

in an ae86, you'll do 4th gear skids easy with 200 - 230 rwkw at QR no worries.... and be responsive too.

so the power you're after is really only good for drags, as for drift it will be fairly useless due to the amount of lag involved.

[Justin Holden]

Have a read of this build thread

http://forums.toyspeed.org.nz/viewtopic.php?t=61383

Big turbos work wonders on 4ages

also read these as well, it can be done and works well

http://forums.toyspeed.org.nz/viewtopic.php?t=61176

also

http://forums.toyspeed.org.nz/viewtopic.php?t=63142

most impressive is the fact the last one was using china turbos none ball bearing and has now chnaged to a masterpower turbo but again isnt ball bearing

I know there fwd's but same motor

[350hp4agte]

hhhhhhhhmmmmmmmm yeh i understand that lag doent help with drift but if im reving the shit out of it cant see it making it to undrivable drift wise correct me if im wrong

i'll have to check the plate on the turbo its by all accounts the 460hp version well that what i asked for anyway ill check the name plate on the turbo

i suppose i might be trying to do to many things with car i should just choose one, thats easy, drift so maybe the t2871r i already have i should just keep and what ever power it makes will be reliable and what ever it runs at the drags is it

[350hp4agte]

justin holden give me you user name and password and i will look haha it wont let me register

[Simon-KE70]

ok, QR isnt such a bad track for a peaky car, since its a fast and flowing track. however if you were to try something like archy or parklands you'd find yourself struggling with the lag.

drift isnt holding it flat all the time you know.. you need to modulate throttle and be on and off it. if the turbo takes too long to build up boost pressure again then you'll make mistakes etc, it will be a handfull "all or nothing" car to drift lol.

[1jz jakey]

if it means anything, im running a 35/40 on my 1j soarer, im on 14 pound by about 3500-4000, alot laggier than the gt30 with .86 housing.

[350hp4agte]

yeh i no ya dont just hold it flat its not my first drift car or fast boosted car for that matter guess im just trying to find the best turbo for what i want

i think i might alredy have it!!

[sundee]

i think with drift turbo choice is very important.. if, in your case u go to big.. it could eaisly fall out of its powerban and u'll be clutching it to get it back up their..

like 7OXIN said, i would agree, anything bigger than what he listed is really going to be hated after a week or so.. having a 4a with a power band from 5k - 8 or 9k it pretty.. in my opinion crap!... u really want it on song no later than 3500 max.. earlier the better..

just call GCG dont worry about emails..
and for a streeter , really when do u get to use that kinda powerban? ud have to really kik it in the guts and by the time it reaches 5 k and is on full boost really.... i dont think its much of a streeter at all..

good turbo selection is the key to good performance and good fun! ;)