My hx35 dyno

[240slidekat]

Sup guys so i got my car back to the dyno with my new set up and here is a comparison between my old (t72) and my new (hx35) set up.

Blue line is HX35Red line is T72

Notice my boost line on my hx35 thats because my limiter on my boost controller was too low and i forgot to change it. but look at the difference it makes, full boost by around 3800rpm my torque line is a whole lot better too. By the way this is a very very conservative tune.

I cant wait to get water/meth injection, this cali 91 oct is killing my power.

[Beanstalk]

Nice dyno is your engine built?? and your holset is running 6psi more than the t72. What kind of w/g do you have? Your lines are wavy ecspecially your A/F?

[Beanstalk]

LOL my bad I read your graph wrong.

[240slidekat]

Nice dyno is your engine built?? and your holset is running 6psi more than the t72. What kind of w/g do you have? Your lines are wavy ecspecially your A/F?

semi built, bottom is built head has pon cams. as for the psi if you look at the graph it only spikes for a few hundred rpm. i believe this is because of my boost controller limiter being set too low during the run.

[DrifterProdigy85]

I like the curve of the hx35. A decent comparison to the 72mm at low boost. The 72mm thrives at higher boost levels though. That hx35 looks like a very fast spooling fun turbo.

[flatrate]

what exhuast manifold is on there? any engine pictures... stock valve springs?

[Cjmartz2k]

I like the curve of the hx35. A decent comparison to the 72mm at low boost. The 72mm thrives at higher boost levels though. That hx35 looks like a very fast spooling fun turbo.

Holsets are the same way with boost, probably more so. They are meant to run stock from the factory at 30psi on a diesel.

[240slidekat]

what exhuast manifold is on there? any engine pictures... stock valve springs?

im using an ebay top mount manifold and stock valve springs. the head is all stock plus pon cams. ill get pics up in a little bit.

[flatrate]

Holsets are the same way with boost, probably more so. They are meant to run stock from the factory at 30psi on a diesel.

most diesels that run that turbo from the factory are not running 30psi out of the box... there not "meant" to run that from the factory..

[Chaos the Xile]

wow! that new power curve is impressive over the turbonetics

[ItzGenX]

What's the HX35 rated for? All the ratings I see are based on a diesel and aren't even close to what we'd make of them on gasoline. The spool on the HX35 looks friggin awesome, now to figure out where it begins to run out of steam. If it could push like 550whp, that would be sweet for a road and track setup.

[240slidekat]

What's the HX35 rated for? All the ratings I see are based on a diesel and aren't even close to what we'd make of them on gasoline. The spool on the HX35 looks friggin awesome, now to figure out where it begins to run out of steam. If it could push like 550whp, that would be sweet for a road and track setup.

ill let you know once i get my water/meth injection should be able to make 500 or close to that at the wheels.

[Chaos the Xile]

there are no really solid spec for any holset turbo to my knowledge

[RustspecS13]

Ive spent the past couple of days reading though a ton of holset info on different forums.

The hx35 should be around a 50lb-min compressor, aka good for around 500WHP. The DSM guys have lots of them in 500whp range, and quite a few hx40s in the 500-670WHP range.

Although from Cjmartz2k's comments on his hx35/40 hybrid on his rb25 the OP should be spooling a little sooner. But really thats a great power band, almost 3.5K wide with super flat torque. Looks like it would keep making power to 7500+ too.

I'm pretty glad some ones finally posted a hx35-rb25 dyno sheet. I was wondering exactly how a hx35 would look on the dyno. Looks like I'll be going with a super high boost hx25 or hx30 on my RB20. Since I'm looking more for response and I don't need 400WHP to drift....just yet.

~Alex

[meet07]

looks like she was trying to taper/level out around 7 grand?? i cant wait to put mine on!!

[PorkChopExpress]

with my rb20 and hy35 i dont see positive boost till 4k but am at full boost by 4300k or so.

i need to do a run on nistune to see exactly where it "turns on" at.

[ST240]

The hx35 should be around a 50lb-min compressor, aka good for around 500WHP. The DSM guys have lots of them in 500whp range, and quite a few hx40s in the 500-670WHP range.

I can't for the life of me figure out how they don't comment on lag. I've read guys saying "Oh its not so bad. It spools at 3500-4000 rpm". I think the hx35 is too big for any 2.0L engine.

I'm pretty glad some ones finally posted a hx35-rb25 dyno sheet. I was wondering exactly how a hx35 would look on the dyno. Looks like I'll be going with a super high boost hx25 or hx30 on my RB20. Since I'm looking more for response and I don't need 400WHP to drift....just yet.

~Alex

Have you considered the HY35? That's what I'm going with. I'm hoping for decent response still. Those turbines you mentioned are a little small no? According to my research, the HX25 flows only 30 lb/min. That's not very much. Actually the HX30 looks like a good option for the RB20 at 46 lb/min.

[ST240]

with my rb20 and hy35 i dont see positive boost till 4k but am at full boost by 4300k or so.

i need to do a run on nistune to see exactly where it "turns on" at.

DAMN. I was thinking full boost a little lower than that. Still not bad tho i suppose. I may ditch the 20 for a 25 if funds permit, and ill use the HY35 on that. Should be pretty responsive.

[DriftingisLame]

DAMN. I was thinking full boost a little lower than that. Still not bad tho i suppose. I may ditch the 20 for a 25 if funds permit, and ill use the HY35 on that. Should be pretty responsive.

I dont remember my HX35 on my RB20 taking anywhere near that long to see positive manifold pressure. I could have swore it started spooling in the lower 3K range, and saw .5 bar in the low 4 grand range. It was with a 6 boost and poncams though. This was with a wastegate spring for boost control, no electronic solenoid controller.

[eh?]

Your boost control is just as bad as mine. lol. What kind of controller are you using?

[ST240]

It was with a 6 boost and poncams though.

That could be the difference tho. Esp the cams, no?

[DriftingisLame]

I dont think so. Didnt notice much of a difference when I changed the cams. I think very large cams actually can hurt spool, but these cams were so close to stock spec, I really doubt they affected spool much.

[240slidekat]

Your boost control is just as bad as mine. lol. What kind of controller are you using?

i have a blitz dual sbc. when i dynod i had the limiter set to low and i had it set to pull back boost 10% so im not sure if thats why the graph is up and down. We didnt fix it till we were already done so i need to do some logging but havent had time and my lap top is down.

[gawdzilla]

i have a blitz dual sbc. when i dynod i had the limiter set to low and i had it set to pull back boost 10% so im not sure if thats why the graph is up and down. We didnt fix it till we were already done so i need to do some logging but havent had time and my lap top is down.

interesting.. i have the blitz sbc-id and it is dead solid. however, when i had it connected like an internal gate it sucked. Are you running set up as an external with the external gate setting selected? I'm assuming the hx35 is externally gated of course..

[240slidekat]

external, but like i said my settings were all out of wack when we were dynoing, i still have to do some data log to confirm that.

[wakotow]

what ecu are you using?

[240slidekat]

what ecu are you using?

aem

[flatrate]

why not use aems boost control?

[meet07]

I noticed that you where running the basic ebay manifold with the old t72 setup and im assuming your using the same manifold. Are you seeing any issues/lag with the divided t3 turbo and un-divided manifold flange??

I ran a divided super t70 on a undivided manifold when I had my b16 turbo. Hitting full boost at 6 grand.

[jacksonbrown]

what size hotside you have on that holset?