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Billet 5858 Installed - wow

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Silver Fox

Well-Known Member
Joined
Apr 17, 2003
Messages
1,150
We've been tweaking on SFCRob's landau vinyl topped, chrome rocker paneled, roll up window Turbo T for about two years now. It was bone stock when we started (even a factory chip).

We found the limits of the factory fuel pump/wiring pretty quickly, and found out the transmission needed rebuilding (thanks Mike Kurtz) when we started adding some power - but the car was very sound otherwise.

We did all the normal mods, stuck an LT1 MAF on it, added a Translator/TT chip, added a 2600ish stall converter, replaced the ignition module/coil pack, installed a Tin Man Brace Kit, installed a Hallman adjustable boost controller, added an RJC powerplate, Pypes exhaust, installed both HRpartsNStuff motor mounts, RJC downpipe, and had Steve Monroe punch out the throttle body and plenum to 62mm (and a bunch of other stuff I can't even remember). The car was running nice, and very strong with these mods.

Just yesterday, we finally installed a PTE turbo saver and a new journal bearing billet 5858 turbo.

We got the car running and made sure there were no oil leaks from the new PTE turbo saver and turbo. I then turned the boost controller down to what I thought would be a safe level, and SFCRob gave me the pleasure of the virgin 5858 voyage.

I hit it, and the boost almost instantly soared to 17 pounds, with the Scanmaster showing 4.9 degrees of knock retard.

I told SFC Rob the "force is strong in this one" but we have to dial the boost back a bit.

I adjusted the the Hallman boost controller two turns, and jumped back in it and was rewarded with 15 pounds of the very strong boost, with the car pulling like a freight train - very hard, and no knock retard registering on the Scanmaster. SFCRob was in the passenger seat finding religion, and talking to the Lord if I heard him correctly.

The billet 5858 pulls hard, and does not have much more (if any) lag than his stock turbo had. If anyone wants a turbo that doesn't have much more lag than a stocker, but pulls a heck of a lot harder than a stocker, you should consider this turbo.

Perhaps SFCRob will chime in and share some more thoughts on his new turbo. We've been slowly tweaking on this car for the past two years, and the synergistic effects of this combo coming together last night was a great experience. As has been said many times - it's all in the combo. I think we nailed it.

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Rob
 
Add some fuel with the TT chip and see if you can get back to 17.
 
Video....where is the video.o_O
Well I guess I'm guilty also...I put one on a car this summer and I was shocked as well.So much so, I forgot to video also. I have been around these cars for a decent amount of time. The 5858 will feels better than the Te44 and Ta49. Do you agree?
 
It seems that when upgrading to a bigger or more efficient turbo you make more power on less boost. How does octane figure into that equation? Do you still need more octane to make the power with no detonation? For example on my stock turbo and 93 octane I will start getting knock at around 15-16 psi. If I put a 5858 turbo on would I still get knock at that psi or at a lower psi?
 
It seems that when upgrading to a bigger or more efficient turbo you make more power on less boost. How does octane figure into that equation? Do you still need more octane to make the power with no detonation? For example on my stock turbo and 93 octane I will start getting knock at around 15-16 psi. If I put a 5858 turbo on would I still get knock at that psi or at a lower psi?
Im assuming that your chip would account for the turbo and up the duty cycle on the injectors as to keep up with the different turbo. In reality yes, youd get knock at a lower psi. Im only assuming this, may be really wrong.
 
In theory...if you're flowing more air than the stock turbo...then you'll encounter more KR. You can throw more fuel at it with Erics chip...to a certain extent.
 
monteperformanc said:
It seems that when upgrading to a bigger or more efficient turbo you make more power on less boost. How does octane figure into that equation? Do you still need more octane to make the power with no detonation? For example on my stock turbo and 93 octane I will start getting knock at around 15-16 psi. If I put a 5858 turbo on would I still get knock at that psi or at a lower psi?

Bigger or supporting more mass flow doesn't mean more efficient. Efficiency could actually go backwards.
 
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