I hear you scorke. But I was specifically refering to Geoff's claims about his 40r kit. Who uses a 20k build 40r 700WHP+ car to autocross or daily drive? You get that to whoop modded Z06's and Vipers on the highway, and for folks like me who don't street race, you take it to the track funds permiting.

 

I never said that. All I did was point out that Geoff from Full-Race admitted the vertical flow sacrifices intake air temp over their horizontal one. Please try to understand, all I did was post some opinions. Don't shoot the messenger.

If I had an opinion on the kit it would have been from using it which I haven't.

The only opinion I stated was I thought Full-Race could have done more testing. And there was all kinds of hype on the vertical flow, but not one done test done it to communicate to likely buyers you get worse performance than a horizontal flow in terms of cooling.

 

Theres more to IC construction than cooling, weight, length of charge piping and hot piping, pressure drop, cooling IAT is only one function of the IC, albeit a large one. If a car is running a more efficient turbo and autocrossing and or road racing the gains from the other factors that the vertical flow helps would really make it shine where as for most people who don't dabble with turning and just like to go fast in a straight line a heatsink in the form of the buschur/ams/whoever BIG RACE CORE will keep temps the lowest at the expense of pressure drop and a large weight gain.

Scorke

 

Every IC represents a compromise. The idea is to use the minimum amount of cooling capacity required, but that is another discussion altogether and doesn't really have much to do with the topic at hand.

The topic here is the potential of twinscroll with the HTA35R. It sounds good at a glance, but there are reasons why it may or may not work as expected. There are only edcuated guesses at this time. Perhaps we'll have some better idea soon.

 

TING!!!! TING!!!!
we have a winner... I have gone the 40r route and not one bit interested in 1/4 miles. road course baby....
Maybe to me Peak power is not the be all and end all!
no point in having a graph that looks like a heart rate monitor...

Mine should be done in a few weeks and will post back here.
The biggest prob with people doing the TS kits is mismatch of the Exhaust housing, Most people end up going to small...
match it correct with the right cams and there is no reason why it wont work...

 

My TS3076 car, with my admittedly **** poor driving, has gone 11.40 @ 123.5 0n 93octane only, before the last round of mods - 1.06 housing, more boost . I recently put it back on Andrews dyno @ Dyno4mance and managed to eek out over 400whp on pump @ 26psi ~ 460 on a DJ. I made a couple changes after that and netted another 12whp. Not to shabby in my book for what most consider to be a small turbo . Will be going back to the track soon and expect LOW 11's @ 125ish on 93.

 

Geoff,
I have a great deal of respect for you, however, it seems like you are making permature judgement on the configuration of the FP GT3582HTA. I have seen you say it is a Borg Warner wheel, along with being a larger wheel. The first claim is speculation, the second claim is flat out wrong.

The HTA35R is not a larger compressor wheel then what is used in a standard GT3582R. It is actually smaller. The HTA wheel has a 58mm inducer diameter while maintaining the same 82mm exducer.

The HTA wheel does look to have several features of the Borg Warner wheels as well as the Turbonetics GTK wheels and the Precision billet wheel in the 6262. It is speculation to say it is a Borg Warner wheel though.

Have you done back to back testing on the HTA turbo? Because if you found it to be any less of a turbo then a standard GT35R in a fair back to back test, I would be pretty surprised. Considering the number of people that have shown it to work as good or better then a normal GT3582R, I just find it hard to believe it is a "mismatch" as claimed above. Even if a single scroll does mask the turbine/compressor "mismatch," I would still find it hard to believe that it has been proven to be as good or better on single scroll kits if that were true.

 

i think when Geoff said the HTA35 comp wheel was bigger he meant it flows more.

 

the hta uses a 7 blade wheel that flows more than an equivalent or slightly larger 6 blade wheel. sorry if i didnt clarify what i meant by "bigger"

early on we tried to order some from fp and couldnt. then the tuners (that i hold the most respect for) tested this turbo, and told me what they saw. BTW gtk wheels are 6 blade, they are knockoffs of gt wheels.

 

Are there any dyno charts/time slips with references to what your sources have seen? Only back-to-back test I can find outside of what is on EVOm is on Honda-Tech. It was on a setup using the 0.78 A/R divided T3, which is obviously the limiting factor on both turbos. Same power, slightly faster spool was the results.

I'm not pushing the "HTA is the greatest" thing, just hoping to get the facts and nothing more. I personally don't think I'd ever push a GT35 hard enough to warrant a $400 upgrade hoping to get a few more HP out of it. If I ever were to that point, I'd get a much larger turbo anyway.

 

While the HTA35R has shown to flow well and deliver big hp, from what I understand it's not so much "a few more hp" that is its main selling point, but the fact that is spools faster than the regular 35R and delivers 50 more lb. ft. @ 4800rpm, which probably will produce greater track results than a little more power up top. People have spent much more than $400 for less results in other ways.

 

What good does 50 ft-lbs of torque at 4800 RPM do for you going down the drag strip with WOT shifts and gearing that never drops you below 5800 RPM?

 

1- I wasn't saying whether I personally think an HTA is worth it or not. I was just pointing out that the few more hp up top isn't really the main selling point of the HTA turbos AFAIK, which you seemed to be focused on in your opinion whether it would be worth it for you or not.
2- There are other types of "track" besides the dragstrip where power under 5800rpm is very important.
3- SPOOL

 

1. Depends on who's talking about it. Some are saying it's for the top end, others for the spool. My opinion is that 200 RPM on the street may or may not even be noticeable and the added top end probably isn't worth it unless you are really push a normal GT35R hard. Pretty subjective there though and merely an opinion.

2. Yes, thank you, agreed. Just talking with respect to what most people around here are doing. Same thing though, I have to wonder how the HTA actually responds on the street compared to a standard GT35R. Boost threshold on the dyno means very little when it comes to response.

 

Geoff,

Care to share the results?