Little-AL

Hi Guys,

We are in the process of throwing around idea's for what to do with the Tigra for next year. There a certain things we are having to change to get the car up to spec for the series that we want to run the car in but are looking for ways to find some more power without resorting to nitrous.

Currently running a GT35/82 with .63 ex housing. Making just over 2bar of boost the car makes 604bhp (@flywheel)



Are we likely to see any gains by changing over to a Precision 6262? Would be a T3 4 bolt flange with the roller bearing core and most likely the .63 hot side. Andy (driver) keeps looking at the 6265 but i'm concerned the car will drop of boost between gears (as it does with the GT35 when we had the .82 hot side).

For reference: it is a 2litre engine and revs to 8500, already has a fairly lumpy set of cams, solid lifters etc.

Any other suggestions or relevant questions are welcomed!!

rs250nut

Precision turbo seem to be smashing it in all classes at the moment from what I have read and been told from people on here the 6262 has similar spool characteristics to the gt 3582r but due to a better wheel design it flows a lot more. The 6262 is rated as a 700hp turbo

hiboostslime

great idea i did the change over from gt30r to 62/63 billet hell of a difference in almost every aspect except for one.. which is spool time

tagperformance

got to look at how far the cams will carry your powerband. perhaps try and shift the car at higher rpms like 9500. I don't see you having problems with the 62/65 falling out of boost if you increase your rpm range. also you can pick up more horsepower on the top end of your power band if you get a .82 a/r turbine housing.

Little-AL

Upping it further than 8500 isn't an option unfortunately. Standard crank shouldn't have lasted this long according to most 'experts' !! Don't want to push it further tbh...

legomytego

if i was you i would send the 3582 to FP (forced perofrmance) for there hta3586 upgrade. cost is cheap$600 last time i checked and it has and it will make more power then a 6262 every time you really should get the bigger hot side do you log back pressure ? .

what your looking for is mid way down the page and there turn around time is 2nd to none

http://store.forcedperformance.net/m...=Turbo-Upgrade

tagperformance

That's interesting. This is a honda motor that we are talking about right?. If so then most of the honda's i have seen came with very stout cranks from the factory. There are many car over here in the states who have made 700+whp on the stock factory crank.

AllShowNoGo727

iTrader: (1)

6262 ftw i have the exact one your looking to get and i like it. .63 ar Ball bearing 6262 v band and the ported cover you cant go wrong.

rs250nut

Vauxhall motor dude, c20 let

TheShodan

iTrader: (14)

There are one or two other companies that do that as well. Best to keep the GT3582R and go for those options. You just can't beat the wheel design of those 68mm turbine shafts and wheels.

https://honda-tech.com/forums/showth...2440990&page=3

legomytego

any new info on your GT3584R shodan ? i have a hta3586 myself but its going on my evo i was sold after i seen it make so much more power over the standerd 3582 without changing spool time to much.

Little-AL

Sorry should have pointed out that it isn't a Honda engine!

TheShodan

iTrader: (14)

Yes. We had some results back that I'm able to compare between those exact two back-to-back but they were on high end power Subaru STI engines. The difference was that the Reaper took about 2psi less boost to make the same power having the same boost threshold. Now for an STI being not NEARLY as efficient in volumetric efficiency as a Honda, the boost threshold/rpm numbers won't be what it would be when it comes to most honda applications, but the comparison is still pretty decent. We also notice a bit better IATs (about 104* on the Reaper vs. 115* on the 3586HTA) at the same boost level, but we're still seeing if that was the turbo, or the change in intake manifold that caused the decrease. I'm working on a few honda engines with it right now. I'll see if I can at least post the boost threshold/rpm curve sometime soon (That data is still on the AEM EMS that was used).

Will it reach the popularity of the HTA? maybe, maybe not. But Pete and I are pretty proud of it.

tagperformance

wow ok In that case you might want to get a forged crank later on down the line from callies, crower, scat.

legomytego

thats good results 2si is a big diffrence you are a lucky sob to be able to design and help build custom units i hope it works out . if you can get a big shop to run the turbo it will get popular and take off i never heard of FP the hole time i was in to hondas turbocharger talk does not happen without there name on evom.

TheShodan

iTrader: (14)

Don't get me wrong, forced performance has been in the DSM, Evolution, and SRT-4 Neon world for years, to a point that from the outside you would think the forum members would regard them as a diety, like Eewa (from Avatar) or Al Sharpton or something. LOL

At first like many, they were doing all Garrett hybridization, but as of late they have made some interesting billett setups. the problem is that they take a high pressure ratio to do what they do, because honestly, those guys aren't used to the volumetric efficiency of a B-series or K-series engine. Even from the factory.

*edit*. I'm in no way claming as though that the GT3584R is an overall "Better" turbo than Forced Performance. (I gotta make sure that I use my words carefully, as they could be taken out of context, being the intraweb & H-T and all). I must give due credit to those guys for their years of hard work for creating and continuing such a market for those guys. But that doesn't mean that one can't attempt to raise the bar if they can, ya know?

CDecker0218

go with the sc6262

boosted n' busted

Has there been any more developments in the 3584r varient? In the Evo/Dsm world the 3586HTA seems to be top dog for a street car, It sure would be nice to have another option available to us if possible.

TheShodan

iTrader: (14)

you've been PM'd

LS AzZkIkr

These modded turbo's look very interesting! Nice work on your reaper design. Think it would be any good for drag racing? I have only one more thing to upgrade on my setup and that is the turbo. This no name ebay t70 has lasted almost 2 years now and I would like to change up soon.

TheShodan

iTrader: (14)

sure. there''s no reasdon why they couldn't do fine, but they are all 4 bolt turbine housings

LS AzZkIkr

I could just weld a V-band flange on it right?

welfarepc

get the bigger hotside.

if i dont fall out of boost on a 6262 Ported S-Comp/82 AR hotside, on a SOHC 1.6L, you should be fine.

might need to tweak the driving style a bit.

TheShodan

iTrader: (14)

No. for the Journal Bearing model that's in a 4 bolt, you would need a 4-bolt to-v-band flange adapter. You don't want to try and weld to that directly. The ones you're seeing from Precision are already CAST as part of the housing.

http://www.atpturbo.com/mm5/merchant..._Code=ATP-FLS1

LightningTeg

If I got an E cover for a 6262, will it still have the map width enhancment? Or is that only an S housing feature?