Holset Turbos

[TurboGeoff]

Jesus man, 12.1 @ 131, thats Supra style.

 

[PSI TSI]

Any updates Joeracer?
My H1c is on the way and Im getting excited to see some other progress.
I see lots of na saying about this set up and Im tring to stay optimistic.

I think we need so video footage of the Holset dyno pulls that may stop the doubters.

 

[definitiveno]

I installed the hybrid today and I have some very initial testing results for you guys. Throttle response was surprising. I do not have a tune on it at all, it is very rich with the a/f ratio hanging around the mid 10's under boost. I was being easy on her in today. I let it idle for a while and drove it around for a few miles and I let it go into boost, it spiked right to 23 lbs. I found that I had mixed up the lines to my boost conroller in my anxiousness to drive the car. After that it worked how it was supposed to I can tell you I hit 23 lbs of boost at about 3900rpms! I was really surprised how fast this thing spooled, even with no tune. Give me a couple more days and I will have some good data and logs for you guys to check out.

what is the common exchange rate between strokered motors and non strokered motors? Does any one have a rough idea of when an equally equipped 2 liter would spool?

 

[joeracer321]

The update is that I broke the car at about 35 psi! Not the motor in fact the motor pulled great! The air/fuel was holding steady at 11.5:1 and the egts were looking awsome at around 1300. The trans was to be coming out for a viscous coupling eliminator and to weld the center diff. so I wanted to find any weak points while the car was expected to be down. So I cranked the boost controller up and made a pass. 1st gear I rolled into the gas and shifted at 7k, then in 2nd I put it to the floor, the engine RPM'd so fast that I bounced of of the rev limiter, imediately as the rpms started falling and I threw it into 3rd I heard a terrible metal on metal sound. I took it back to the house and put it up on jackstands, the noise is not appearant at idle, and is isolated to the flexplate area. I am nearly positive that I cracked the flexplate as the motor went on the limiter. I expected the trans to be out tonight, the thing is sitting in there on a jack waiting for the cross member to be dropped and it would be done. But the lack of help is slowing me down. I was supposed to have an extra set of hands tonight, but I was flaked on. But I was promised a hand in the morning so that I can get it out. I always like to have an extra set of hands on a trans removal, especially an A/T, otherwise it could get ugly fast without any one else there to help with the situation. I have also decided to get away from the stock restalled converter and I am having a custom 8.5" made to better suit my needs. So I have a 4K RPM restalled converter for sale if anyone needs one.

 

[definitiveno]

Where you at in commi-fornia? I am in the Orange county area if I can offer a helping hand. My buddy might be interested in helping this week end as well.

 

[joeracer321]

Thanks for the offer, but I am all but done pulling it out. It is literally just sitting on the crossmember. All of the mounts, wires, and all are off, and it is supported by a jack. A friend of mine is coming over in the morning to simply give me a hand sliding it out of there. I am in the Lancaster area, about 60 miles north of LA.

 

[definitiveno]

Alrighty. Best of luck

 

[Maglin]

Sorry to hear about your problems. I should have my car back together hopefully in 2 more months. I have my new TRE trans sitting litterally in the middle of my living room. (We are using it for a table while we wait for the motor) I'm planing on running probably around 28 PSI on Pump with around 13* of timing.

What was your timing advance looking like at 35 PSI? I have a timing table already set up for the HX-35 as a base that I hope is low enough. I would just like to see what you are uing for your timing table and what kind of knocking you was getting.

 

[joeracer321]

On the data log I showed a full 26 degrees of timing, and I am assuming little or no knock because there was no timing pulled.

Update: The trans is out and I did not break the flex plate. I don't know how but the bolts vibrated loose and the flexplate was walking around. That caused the flexplate to oblong a few of the holes. The bolts were torqued with red loctite. Which also leads me to believe that I may have sh#t a balancer, which doesn't look broken but it could have slipped and caused excess vibration.

 

[93AWDTalon1]

The update is that I broke the car at about 35 psi! Not the motor in fact the motor pulled great! The air/fuel was holding steady at 11.5:1 and the egts were looking awsome at around 1300. The trans was to be coming out for a viscous coupling eliminator and to weld the center diff. so I wanted to find any weak points while the car was expected to be down. So I cranked the boost controller up and made a pass. 1st gear I rolled into the gas and shifted at 7k, then in 2nd I put it to the floor, the engine RPM'd so fast that I bounced of of the rev limiter, imediately as the rpms started falling and I threw it into 3rd I heard a terrible metal on metal sound.

What kind of rpm's was it spoolin 35psi?

 

[joeracer321]

It was spooling somewhere between 4300-4500 rpms.

 

[PSI TSI]

I got my H1C today

I noticed it will bolt right on to my tdo6 adapter so Should I try it as it is? Iwould need to get a wastegate though.

I also thought of modifying the housing to block off the second runner of the tubine housing I couls weld a piece into the second part and tapper it up to the inlet to make it like a smaller single runner. What could it hurt to try it. Id rather experiment with it then just tossing it out. I have the facility to do the mods so that isnt an issue.
I know Im likely to get negative feedback just thought Id throw this out there.

 

[DSM-ZERO]

Many of you have contacted me about machining a Holset turbine housing using the Garrett T3 inlet flange. Most of you are using a Garrett non-turbo conversion kit or aftermarket manifold that uses this flange pattern. If you are still interested and are subsribed to this thread please contact me directly to place your order. We have completed the print and have these units scheduled to be machined in a few weeks. Thanks

If you are going to make a T3/HX40 I'll be intrested in getting one

 

[joeracer321]

Here is a log of my car @ 35 PSI, on 91 CA pump. Track numbers are coming very soon. Along with vids and more data logs. These turbos work!

P.S. You will notice that the map sensor was not connected at this point, that is why boost reads 0 psi there.

 

[TurboGeoff]

That doesnt prove anything man, it doesnt show boost and i have that same program, i know you can manipulate those #s.

 

[joeracer321]

That doesnt prove anything man, it doesnt show boost and i have that same program, i know you can manipulate those #s.

I don't think you can manipulate the numbers unless you photoshop it. I simply took a screenshot from my ecuplus log playback. And I know it doesn't show boost because I haven't wired in my map sensor yet. But thanks for adding relivent information to the thread :thumbdown.

 

[defrag010]

That doesnt prove anything man, it doesnt show boost and i have that same program, i know you can manipulate those #s.

Well, if he was gonna manipulate them, you'd think he would put the boost in there too.. :laugh:

 

[joeracer321]

Well, if he was gonna manipulate them, you'd think he would put the boost in there too.. :laugh:

Good point, I didn't think about that, but you are right. I am not here to lie to anyone, just to show how my Holset is working out.

 

[93AWDTalon1]

keep us updated on your car

 

[ceedawg]

Good talking to you Josh.Dont forget to email me the info Thanks Carl.

 

[joeracer321]

Good talking to you Josh.Dont forget to email me the info Thanks Carl.

No problem, glad I could help, call me tommorow afternoon about 12 or 1 PST tommorow.

 

[TurboGeoff]

i was just messin with ya!

 

[EagleTalonRacer]

with stock internals on a 4g63t?

 

[Talon_Got_Boost]

I thought I saw it earlier in this thread but did not get around to posting about it. You were mentioning the efficiency of your fmic and how it affected your intake temps. Are you taking the temps from the throttle body instead of the mass sensor?

 

[Maglin]

Most people that are comtemplating useing a Holset turbo I hope knows that the MAS intake temp sensor is before the IC. So I would assume that by the way Joeracer talks he knows this and it's an aftermarket IAT sensor post IC.

But the profile doesn't state either a MAFT or IAT sensor so it could just be the ECU+ pulling that info. I'm not going to reread this entire thread again but it's not to imparitive as the size of the FMIC is fairly large. The holset turbo's are fairly efficient as far as turbo's go. And anything that is pushing 30+ PSI is going to get fairly warm. I would say above 25+ PSI is where you will see the difference in different FMIC constructions ie... Bar & Plate vs. Tube and Fin for efficency. So lets not get to carried away with IAT's as this thread is for the Holset turbo's and their performance on the 4G63/64.