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Thread in 'Technical Questions' started by dale_b, Nov 23, 2012.
some more progress from norway if anyone interested.
Took the jzx to wheels for first run with the new power and could not believe the way power came on , was so strong all time.
Last year could not get into 3rd at wheels as the gearing on these cars are so long , was hoping to get into 3rd on faster parts of track, well went out hit second bend and couldn't help but run 3rd the hole track, no clutch kicking just squirt the throttle and smoke everywhere.mental low down tourqe like a v8 but better and more fun in my opinion.
Anyway as I thought perfect for our tracks over here. Thankyou
Just wondered if anybody has any experiance of a HX35 with a 16cm housing, thinking off putting one on a 1jz vvti ? How easy is it to get a 12cm housing, anybody know where you can get them from ?
Brilliant man! Glad it worked as well as we both expected, maybe more so! Sounds awesome! I'd say enjoy it but it sounds impossible not to lol.
Ye cheers mate you go pembrey some times don't you? Wil try to get to couple of them this year be good for you to see it in flesh mate still can't really explain how it feels !
Trying to get a second hand holset housing is a joke. But you can get a brand new 12cm housing for £175 + vat from SCM turbochargers in huddersfield they are literally on the doorstep of cummins/holset
Driftdreamin- Yeah always at Pembrey mate, will be there on the 21st. Sounds an ideal engine for that track tbh!
Wardy- There was a brand new genuine HX35 7blade with a 12cm housing on fleabay earlier for 450, it was sold next time I looked- Think it was on sale for maybe 2 hours! lol.
Ill be selling my 7 blade hx35 with 12cm housing soon
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Anyone used a HE341 or HE221?
think there is someone in Ireland with a HE341 getting 350bhp on an sr, but the HE221 from what people have written should be a 400bhp turbo on a 2.0l? I haven't looked at the compressor maps or anything just the fact Juha ran 2@ 700bhp on a 2jz also could be a few turbos for thought? is the HE 341 similar to a hx30 though Stav?
I'm running a HE341 on my RB20. Works well.
It's nothing like a HX30, way better, it's basically a slightly updated/improved HY35 with a 9cm turbine.
I've seen a few HE221s in Scandinavia pushed over 350bhp, one to over 400bhp. Think you'd be fairly hard pushed to get more than 350odd out of one mind.
BUT officially Holset rate the compressor to 39lb/min, so pushed hard it should be a ~400bhp turbo on the right engine.
I know of someone in the UK running a HE221 on a standard 1.9 16V Volvo engine, he was on here, it was at about 290bhp and 320lbft at 1.3bar, full boost about 2.5k, on the standard ECU map, and reckoned about 20bhp more on the same boost level would've happened with a proper map.
I know he ran up to 2bar boost on it after, and maxed out what it seemed it was gonna do, putting a HX35 on it now I think, but I don't know of figures and seems to have gone quiet at mo.
Know it was mega fast spooling and lots of torque.
If he still uses DW he may pop up and say.
EDIT- Just checked, he hasn't been on here since December.
Here's my HX35 on my 1j.. Not quite running yet, will get some dyno graphs up when it's done and mapped.
Slightly off topic but I can't seem to find a definitive answer anywhere...
How can you estimate bhp from lb/min? Is itlaroughly lb/min x 10? Seems a bit too simple!
I'm guessing it depends on engine size?
HE221's are probably a little small for the 350-400 range on a sr then? But the HE341 seems a pretty good option what did you get on your rb20 dude? Got any mapped runs to put up either?
How similar flow wise does it compare to a t518z? or td06 20g?
My gsr hx35, guessing 16cm housing as standard? This twin scroll so hoping it won't be too laggy.
Should be running next week so I guess I'll know wether I need a 12cm then!
Ryan- Yes, basically. On a petrol that's about right, as all use similar AFRs. But compressor maps aren't worth shit IMO, so you can only use the lb/min as a rough guess.
I know of turbos that will do WAY off the end of the map, but others nobody seems to ever get quite what's claimed.
Bob- Depends what boost you on about. If you're talking about the typical lowish boost 350-400bhp SR then yes I reckon a 221 is probably too small. But then again going by other results I reckon you could build quite a weapon of a 2ltr with best part of 400bhp and maybe even more than 400lbft using one at 2bar plus.
Mapping is happening as we speak on mine.
Fuck knows about those other turbos, never looked in to them.
Crosshatch- TBH that housing looks hooj, if it's a 16 it should be fine though,.
Stav did you get my pm I sent you the other day? Cheers
Heres a pic of a holset he351cw on my 1jz,just left in place,oil line and down pipe need to be made up,bit of a tidy up around the engine bay and its ready for mapping
For all HOLSET lovers, here is the formula to convert Holset turbine housings size in cm to "garrettish" a/r.
HOLSET CM * 0.064 = A/R
10CM*0.064 = 0.64 A/R
Well other info here:
States 17cm ~ 1.00AR, makes it to 10cm*0.058= 0.58AR.
All pretty close.