turbo spool rates - Honda Prelude Forum

BlueShadow · 03-09-2002, 06:25 AM

Hey Everybody,

**I only want info on Turbo'ed H22 VTEC Ludes**

I was wondering if all you turbo'ed Luders could answer a few questions for me. I wanted to see at what RPM you guys hit a certain boost pressure, and what your setup is (compressor and turbine size).

I wanted to know at what RPM are at when you are at:

8 PSI?

10 PSI?

12 PSI?

15 PSI?

18 PSI?

and also please dont forget to include your compressor and turbine sizes.

TIA

BlueShadow · 03-09-2002, 06:28 AM

And before someone tells me to do a search.

This is in reference to how I select turbos using compressor maps. I want to perfect the way I do it, so thats why I posted this thread. So far I know that most people reach 7-9 PSI by about 3700-4000 RPM.

Turbo Lude SH · 03-09-2002, 02:09 PM

Here's my Setup:

T3/T04E Turbo

T3: .63 A/R Stage III trim.
T04E: 60 trim

With Ceramic Ball Bearing option.

8 psi = 2900-3100 RPM's
10 psi = 3400 RPM's
12 psi = Never ran 12psi specifically
15 psi = 3900-4100 RPM's.
18 psi = Havent tried yet.

Let me know of ya want any more info.

98lude · 03-09-2002, 04:33 PM

Haven't run boost yet since I changed over to.57 trim .50a/r t04e/t3 stage 3 .63 a/r. Will post when I finish tuning my haltech.

Quote:

Originally posted by BlueShadow
Hey Everybody,

**I only want info on Turbo'ed H22 VTEC Ludes**

I was wondering if all you turbo'ed Luders could answer a few questions for me. I wanted to see at what RPM you guys hit a certain boost pressure, and what your setup is (compressor and turbine size).

I wanted to know at what RPM are at when you are at:

8 PSI?

10 PSI?

12 PSI?

15 PSI?

18 PSI?

and also please dont forget to include your compressor and turbine sizes.

TIA

BlueShadow · 03-09-2002, 10:35 PM

Quote:

Originally posted by Turbo Lude SH
Here's my Setup:

T3/T04E Turbo

T3: .63 A/R Stage III trim.
T04E: 60 trim

With Ceramic Ball Bearing option.

8 psi = 2900-3100 RPM's
10 psi = 3400 RPM's
12 psi = Never ran 12psi specifically
15 psi = 3900-4100 RPM's.
18 psi = Havent tried yet.

Let me know of ya want any more info.

Thanks Turbo Lude SH!

Thats pretty much what I was looking for, even though you didn't specifically get 12 PSIs RPM I can easily guesstimate it.

Have you always had a BB turbo? or did you at one time run a standard bearing assembly (CHRA?)?

thanks again!

Pure Lude · 03-10-2002, 06:20 AM

I have a

t3/to4B (garret housing) with a .50 E trim wheel stage 3 and a .63 A/R

i make 8psi @ 3700-3800rpm

BlueShadow · 03-10-2002, 06:54 AM

Quote:

Originally posted by Pure Lude
I have a

t3/to4B (garret housing) with a .50 E trim wheel stage 3 and a .63 A/R

i make 8psi @ 3700-3800rpm

Thanks Pure Lude!

keep em coming guys!

TIA

Turbo Lude SH · 03-10-2002, 07:33 PM

Quote:

Originally posted by BlueShadow

Thanks Turbo Lude SH!

Thats pretty much what I was looking for, even though you didn't specifically get 12 PSIs RPM I can easily guesstimate it.

Have you always had a BB turbo? or did you at one time run a standard bearing assembly (CHRA?)?

thanks again!

On my Lude I've only had the ceramic BB turbo but I've run T3's on smaller 1.6L engines and they don't even spool up as fast.

iranman · 03-10-2002, 07:50 PM

This will probably be useful for a while.

This thread has been "Sticky"-ed.

Blaast · 03-13-2002, 06:11 PM

Falls in line with my numbers as well

I can get to 8 psi as early as 3000 RPM.

My turbo is a holset. no idea it's GArrett equivalent but it looks like a T3/T4 but heck, I don't care since it works great.

95PRELUDEVTEC · 03-19-2002, 02:10 PM

Turbo lude sh....your's is a Fmax turbo correct? have any of you guys ran it at the tracks yet?

95PRELUDEVTEC · 03-19-2002, 02:13 PM

also turbo lude sh....are you running on stock internals? i'm planning to get a Fmax turbo and upgrade to BB......i want to know how much boost is safe for the tracks and on the streets....

Turbo Lude SH · 03-20-2002, 01:24 AM

Quote:

Originally posted by 95PRELUDEVTEC
also turbo lude sh....are you running on stock internals? i'm planning to get a Fmax turbo and upgrade to BB......i want to know how much boost is safe for the tracks and on the streets....

I've got a stock FMAX kit but my own fuel setup. Also the BB turbo and a 37mm Tial wastegate.

Test and tune next weekend. I wont have slicks or my clutch. 2 weeks after that I'l have some timed with slicks, stage 3 clutch, and 12 psi.

95PRELUDEVTEC · 03-20-2002, 11:15 AM

are you running on stock internals? how much psi daily and how much at the tracks?

Turbo Lude SH · 03-20-2002, 01:46 PM

Quote:

Originally posted by 95PRELUDEVTEC
are you running on stock internals? how much psi daily and how much at the tracks?

Usually 6.6psi around town. I'll run 9psi when I'm going to race someone who is pretty equal to me. On occaaion I'll up it to 10 or once 15psi just for one run.

I'll run 11psi at the track I'm planning.

apexii · 03-22-2002, 02:46 PM

wow, 15lbs on stock internals? You're just begging to blow. One run or not, the head bolts alone don't like that much. I cranked up to 13lbs once, lifted the head in seconds.

Keep it conservative until you build. Otherwise, you'll just be anoter statistic with cracked piston lands or a toasted block. just my 2.

smoothludey · 03-23-2002, 04:34 PM

I agree with apexii, it's scary to boost more than 10 pounds on stock internals unless you are ready for a rebuild at any time. I've heard that the H22 pistons or piston rings on the 5th gen are faulty and don't last long in the face of turbocharging. Besides, that's the least of your problems as the cast rods are supposedly the weak point in the H22s.

Turbo Lude SH · 03-25-2002, 07:38 PM

Quote:

Originally posted by apexii
wow, 15lbs on stock internals? You're just begging to blow. One run or not, the head bolts alone don't like that much. I cranked up to 13lbs once, lifted the head in seconds.

Keep it conservative until you build. Otherwise, you'll just be anoter statistic with cracked piston lands or a toasted block. just my 2.

Did you tune for 13psi? Or just crank it up without changing anything to do with the fuel?

I've ran 13lbs more than 5 times and yet to have a problem. Ran 18psi 2 days ago for a full run in 3rd gear. Still no problems.

13psi for a second and your head lifted? How many miles did you have on the motor?

I've got a H22 longblock sitting next to me. Not gonna piss my panties if this one blows.

Well... I might.

smoothludey · 03-25-2002, 09:18 PM

Quote:

Originally posted by Turbo Lude SH

I've got a H22 longblock sitting next to me. Not gonna piss my panties if this one blows. Well... I might.

No wonder you're boosting like there's no tomorrow....victoria secret panties? cotton or silk?

apexii · 03-26-2002, 10:09 AM

Quote:

Did you tune for 13psi? Or just crank it up without changing anything to do with the fuel?

I had an mf2. As you may or may not know, the mf2 is 3d mappable up to 30lbs.

Quote:

I've ran 13lbs more than 5 times and yet to have a problem. Ran 18psi 2 days ago for a full run in 3rd gear. Still no problems.

Well that's nothing to brag about, but I will be the first to laugh when you go bang.

Quote:

13psi for a second and your head lifted? How many miles did you have on the motor?

13-14psi in 4th gear for about 8-10seconds. Couds of white smoke then billowing from my exhaust, only under vacuum. ~60-70k. Stock head bolts stretch, ya know.

Quote:

I've got a H22 longblock sitting next to me. Not gonna piss my panties if this one blows. Well... I might.

I forgot, they grow on trees! You're on borrowed time man.