Just curious if anyone's had any experience with them and their turbo kits ?

Been shopping for a gt40 kit, but after more reading thinking about going with a gtx series turbo instead.

http://www.himni-racing.com/index.ph...oducts_id=2178



Thanks

 

Looks like a well thought out kit. I like it.

thewird

 

I like the heatshield on the manifold however why not just go with a tried and true kit from Sean at Apsec? While pictures may look nice, I've always appreciated that Sean does the math behind all the fancy parts in respect to manifold length, optimal routing, pipe diameter, materials used etc...

 

Same thing I was thinking. Nice fittings and braided lines and everything.

 

look sexy. do it!

 

I've ordered small parts from them with no problem but have seen some negative feedback in the good/bad guy forum.

Jack

 

Many many moons ago, I ordered two tial wastegates from him. He used to post on all of the available forums at that time. We set everything by PMs (price, size, color, quantity) and I made the purchase.

It took him over 4 months to get me the damn wastegates. I dont mind the wait, but I feel that he should've been honest from the get go.

Cliff notes, he islegit, but be ready to wait, without getting much feedback from them (if any)

 

you want a 60 mm WG w that setup...

 

I don't see why you would say that when 44mm is sufficient for 67mm turbo's both cast and billet and 38mm has always been sufficient with your standard 35r so a 44mm will be more then sufficient without fail. Its not like the wastegate discharge is poorly designed.

thewird

 

they also offer dual wastegates for that exact kit, so that should help flow in that department. I think its dual 38mm WG's

oh, and wouldnt you only really need to worry about more flow in the WG(s) if you are running relatively low boost?


And they offer 4" DP and ceramic coating... Also will plumb wg(s) back into DP for no charge

i was looking at this kit as well but the feedback threads have me scared also, even though they claim that alot of it is made to order and they warn of a wait on the site, but still

Also was looking at the GTX37R and it says it flows as much or more than the GT4094R but i dont know if that is true or which way i should go

 

Nice kit overall. I'd sport it!

 

"44mm is sufficient for 67mm turbo's"

sure. i just like WG overkill. the larger the WG the easier it is to control and i really like the idea of being able to dial the boost down on the street so you don't have to modulate the go pedal.

"dual 38mm WG's"

nothing wrong w dual WGs except they present more V bands to potentially leak as well as more piping. simple has it's advantages.

GTX37?

hmm, first time i have heard of it. i googled a bit and didn't come up w anything.

i am going to assume it will follow Garrett's X formula, having the same dimensions as the non X wheel but perhaps flow 10% more probably up top.

so here's how they compare:

........................average cold wheel area.................average hot wheel area

GT3788R..................7.155 sq inches..............................5.694 sq inches

GT4094R..................8.175.................... ..........................6.423

TO4Z.......................7.002.................. .............................5.89

GTX3582R...............6.386...................... .........................5.171

compared to the GT4094 the item that jumps out is the significantly larger hot wheel.

the other item is that given the slightly larger size of the compressor wheel on the GT37 the compressor map shows only 68 lbs/min... the typical 67 mm wheel (such as the TO4) flows 73 and has a smaller average size.

hc

 

yeah it said it was a billet gt37 and said it flowed 90lbs+ or something like that, even had a map, i will try to find it again. i stopped looking more into it when i saw this 4094 kit and thought eh that'll work

i wonder if it was a bogus site just trying to jack money... the hunt begins, i will go look now

 

One thing I've found is that parts can look amazing in pictures, but once they're in front of you oftentimes you get a bad surprise. Then when it comes time to install, it can be a nightmare.

Couple my natural skepticism with some of the feedback that Jack/Trout mentioned and......

Personally I'll stick with the A-Spec kits. It can take awhile, but always worth the wait

 

"A while" is subjective, it can be a month or 6.

Whoever is considering a kit should find out both Himni's and A-Spec's delivery time promise. I bought my kit from A-Spec and the owner Sean is an honest guy. However before buying my kit, I never saw an official picture of the kit, only what I've come across the internet so when the kit arrived I couldn't check if anything is missing or not. I had to email back and forth.

If the pic is a true pic of Himni kit, then I can tell you that the A-Spec kit does not come with the heat shields, the polished dump pipe, and the support pieces welded on the manifold (not sure if it's really necessary but extra insurance I guess). An equivalent A-Spec kit would be cheaper or have a similar price.

Anyway Himni kit looks pretty good in picture and in a month or two you'll get to see my A-spec kit's picture once I start my build thread, so you can do your own comparison. My recommendation is compare both shop's delivery time and prices. A-Spec is the one true and tested around here (but not as active in the forum as they used to be) and maybe Himni is popular in other car communities.

 

I ordered some parts from Himni and it was pulling teeth to get a tracking number or ANY communication out of them. I sent 3 emails in 2 weeks before getting a response and it wasn't until I threatened to dispute the transaction with my CC they actually responded.

Sure I got the package all well and good (even with a piece of Laffy Taffy candy in the bag haha) but I would never spend that kind of money with some people who have no interest in real customer service.

/my 0.2 cents

 

"yeah it said it was a billet gt37 and said it flowed 90lbs+"

i bumped into this today...

The FP HTA™ GT3794R turbocharger is the next step beyond the FP HTA™ GT3586R in power production within the GT35R footprint. It combines the greater turbine flow found in the GT37 with the 90lb/min flow rating of the 94mm HTA™ compressor. The compressor wheel measures 67.5mm inducer and 94mm exducer. The turbine wheel measures 72.5mm inducer and 66.5mm exducer.
This unit has a standard GT35R configuration, so it can easily replace an existing GT35R without modifying the header or manifold. It is available in either 3" vband or 3" 4 bolt outlet. No other turbine housing options are available at this time.

This turbocharger is recommended for applications running 40psi boost pressure that target the 800-900whp range. The FP HTA™ GT3794R has exceeded 900whp easily during testing as well has running 8's in the quarter mile with trap speeds in excess of 160mph."

from the Forced Performance site...

downside is it is a T3 .82 hotside. apparently the turbo has made around 900 legitimate hp on a piston app. that'd translate into about 700 rotary IF you could run it in the 40 psi range...

for many rotary people that find they like to run in the 20/25 boost area the question is how will it deliver.

a very major plus is the diminutive size... an 18 pound turbo that can be located very close to the motor and not take up much space but w a 8.14 sq inch average area compressor.

cold side 8.14 sq inches
hot side 5.89 sq inches

as you can see it is similar to a GT4094 compressor wise but has an approx P trim hot side wheel in a T3 .82 housing.

the 4094 has a 6.423 hot side and a T4 housing.

apologies for the slight detour here.

howard

 

+1

Customer service goes a LONG way. An annoyance when it takes time to get your pars, but what if things are missing, fitement issues or a replacement is needed. This is when the guys that do a mediocre job of delivery can really cause more headaches!!

This is a tight business and if you want to succed as a performance shop it takes more than a sorted product.

 

aahhh... Thanks Howard, i knew i wasnt crazy, i was like i seen it and then i couldnt find it again, i never looked as in-depth as you did on it... sounds like i will stick with the gt4094r.


Hey Howard, you say something about rotaries and 20/25psi, why is that? i was thinking about running 25-30psi but is that a bad choice, there must be a reason alot of people only run 20-25psi, right?

 

^A lot of people run ~15 psi because that's the universal 'safe' accepted limit on pump gas.

Likewise, a lot of people have been pushing it to ~20 psi with water/meth injection.

Much higher and you're looking at either e85, race gas, or a large quantity of methanol (more than the standard coolingmist/aquamist/etc can deliver).

I don't profess to speak for everyone, and there are always a few people who claim to be running 20+ psi 'safely' on straight 93 octane. I also can tell you numerous stories of guys with 400 rwhp on a 15psi single turbo who chip an apex seal in cold weather after making no real changes to their state of tune. Pump gas is a bit of a roll of the dice, and this is why we recommend water injection for all cars above ~350 rwhp.

Sorry for the semi-thread detour

 

Oh ok, i have no prob running C16 so thats cool, not a DD or anything like that

yeah sorry about the detour off the OP's original thread questions, so, as the OP stated, what would be a better choice, the GTX3582R or the GT4094R or maybe that FP HTA GT3794R

i think thats what he was wondering, or was it more about Himni?

 

"as the OP stated, what would be a better choice"

of course the obvious question is...

choice for what task?

for top tick dyno sheet forum applause?

for street happiness?

for HUTC?

it is HUTC, by the way, that WINS races.

that'd be horsepower under the (rpm) curve.

if you are running a stock transmission when you shift from first to second at, say, 7800 you are looking at

4524!!!!!!!!!!!!! that's 4524 RPM.

into 3rd is 5380

4th is 5616!

how many of you have ever looked at 5500 on a dyno sheet?

to win you need to be making lots of hp at 5500 and up. that's why i have an excel spreadsheet study of 49 dynos (all corrected to SAE) w figures at 5500 thru 7500 at 500 rpm intervals.

you'd be surprised that some runs show higher top tick hp but have less total HUTC.

that means they lose even though they might have a higher top tick number.

HUTC is not generated singly by turbo selection. it is also importantly effected by tuning, ports, manifolding.

that said, turbo choice plays an important part and it is my contention that there isn't alot of apples to apples comparative data out there. lots of theory, lots of turbos on different engines, dynos, tuning etc.

that is the reason for my project which although a year+ delayed will shortly move forward in an attempt to gain a better understanding as to how theory relates to reality w re to turbos. i do own a GT4094, will be testing a GTX35 as well as some other turbos.

as for the boost question, Goodfella has it pretty much covered... our engines are only 1.3 liter actual displacement. since they function as a 2 cycle they offer 2X the combustive size V a 4 cycle, but they remain 1.3 L. 1.3 L with NO cooling cycle like a 4 cycle.

when you start making 400 rwhp 460 FWHP from such a small displacement you'd better have all the bases covered given the huge amount of combustion chamber pressure/heat.

it is worth noting that while racegas is a plus it has the same autoignition temperature as pump gas, around 500F. you will want to run water and/or meth to keep your motor happy in addition to your base fuel.

hc

 

oh i have meth injection also so thats fine...

cant wait to see your comparison thread finally finish..

 

i have one of there kits. there phone service wasnt that great, but i dealt with Paul over emails. He always responded rather soon (usually by the next day). there was some hold ups getting my kit, but Paul always kept me informed on what was going on, and in the end i didnt end up waiting too long. beautiful put together kit, and beautiful welds also on the mani and down pipe (i went with the single 44mm)

just realized thats the fd kit, i got the fc one, but looks almost identical.

 

howard is correct. the way that manifold is done Good morning overboost with a 44mm gate and a gt4088r. Maybe a bush bearing t04 with a big rear will have no issues but not most roller bearing gt series turbos