Gt3794R

[HYPED6]

I always used to love DD because I think they give more realistic figures compared to hubbers, but after using the dynapac lots now I'm converted. The ability to have such repeatable and consistent results so you can actually compare cars and/or modification effects is awesome

Until you have to tune more than 2 cars a day, they are great. I learnt dyno's on a dynapak........ perfect for wheel spin issues as well.

Like an ecu (well most) , its only ever as accurate as the operator.

Edited June 21, 2012 by HYPED6

[discopotato03]

That AWD Motorsports claim of this GT3794HTA being on the GT35R "footprint" is a bit interesting . I suspect they may mean the same mounting flage footpring because the BB GT37 turbos are all larger center section things than a GT3582R/X/HTA .

I hadn't thought Garrett would put together a BB spec GT37 turbine with their GT94 compressor wheel . They did do a GT4094R which people I know of thought was a bit lack luster . Forced Performance seems to be doing quite well with their HTA compressor and port shrouded housing upgrades on Garrett cartridges .

Not knocking what people are doing with these things or GT3788Rs but a little while back David Buschur cranked out from memory 600+ from a stretched 4G63 on E85 with a GT3076HTA , not sure which turbine housing though .

Sorry if slightly OT but there are also 3 variants of the GT37BB series and the mid comp spec one uses the same compressor wheel as the smaller frame GT3582R .

http://www.dieseltru...ew-t288434.html

http://www.completeturbo.com/Dodge02.pdf

http://store.forcedp...TGT3794HTA.html

A .

Edited June 23, 2012 by discopotato03

[scotty nm35]

A mate with a 2j Supra just pulled 550wkw with a GT4094R on Caltex e85, boost comes on strong, 20psi by 3k. Not very lack luster, quite impressive I thought.

[discopotato03]

Poor choice of words , what I ment was lacking compared to a GT4294R . From memory HKSs sollution was to use a T51 turbine and a slightly smaller trim 94mm compressor . It may be possible to buy the T51R/94mm cartridge through Garret and source you own housings .

A GT4094R is just a 4088R with a 94mm compressor in a housing intended for an 88mm wheel . The 94 and 102mm compressors usually have larger housings and I think HKS had their own made up for T51R KAi and SPL .

A .

[Lithium]

Not sure why a GT3076HTA making 600whp on E85 would be knocking these? I am not aware of anyone hitting a wall with these yet and people have pulled 900whp on E85 with them on high boost. A DSM in the states has done 8.4 at around 170mph with one.... pretty serious business!

[discopotato03]

Sorry still OT but I believe those GT3076HTAs have a lot of potential even on larger than 2-2.4L fourbangers . The GT30 turbine gets a big increase in exhaust flow capacity with even the 1.06 AR T3 flanged turbine housing and FP has already upsized to the larger 0.70 AR T04S compressor housing on this turbocharger .

If I ever built an RB30 and wanted to spend money on turbos this is what I'd use and it'd be on an IW GT30R turbine housing in 0.82 or 1.06 AR .

Anyway back to the GT3788R and GT3794HTA I reckon some of the gains would be from the turbine living in a housing designed for it rather than a GT35 turbine bashed into a bored out GT30 turbine housing a la GT3582R .

Hopefully in time Garrett will make available to the public the large frame ball bearing GT35 turbos using the GT40 turbine housings intended for that turbine .

A .

[Lithium]

Agreed on the 76HTAs, I've mentioned a few times I'd like to see one on an RB25.

In regards to the GT37 vs GT35, in the EVO world the general consensus seems to be the GT3586HTA is an overall better match unless you intend on pushing past 40psi - >800whp Dynojet style with a 4G63. Psi for psi they offer similar power, better spool, better transient response etc - so it doesn't seem like the GT35 turbine is really doing it a huge disservice.

A mate of mine hit 560rwkw on ~25psi using E30 with a GT3586HTA on an RB, with ridiculously good power delivery -fwiw.

[The Dan]

Agreed on the 76HTAs, I've mentioned a few times I'd like to see one on an RB25.

In regards to the GT37 vs GT35, in the EVO world the general consensus seems to be the GT3586HTA is an overall better match unless you intend on pushing past 40psi - >800whp Dynojet style with a 4G63. Psi for psi they offer similar power, better spool, better transient response etc - so it doesn't seem like the GT35 turbine is really doing it a huge disservice.

A mate of mine hit 560rwkw on ~25psi using E30 with a GT3586HTA on an RB, with ridiculously good power delivery -fwiw.

On a 2L 4cyl yes I would definitely stay with the GT35 or GTX35. It's only the larger displacement 6 cylinders that seem to benefit from them so much

[Lithium]

That makes sense, I don't know how much my mates RB30 would make on pump gas - he decided from the outset to use an eth blend I believe. The turbo wasn't going to make any more than 560kw on E30, though.

[Lithium]

So recently one of the American drag DSMs running one of these had a few upgrades and a bit more of a fierce tune recently using a T3 flanged GT3794HTA and lay down 936awhp on a Mustang dyno (read similar to DD/Mainlines).

Its first event it ran 8.48 @ 171mph on E85, and apparently has more in it...