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TimZ
founding member
Joined: 25 Feb 2008
Posts: 120
Location: Dearborn, Michigan
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 Posted: Wed Oct 22, 2008 11:38 am Post subject: Datsun Z with E85, GT42R dyno results |
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Well, I finally got a chance to get my car back to the dyno, just to confirm my suspicions on the E85 conversion I did over the winter. Very pleased with the results. This was on a stroked L-series, not an RB-series, btw.
The major changes since last year
( http://forums.hybridz.org/showthread.php?t=121857&highlight=dyno" ) consisted mainly of:
- actually dialing in the cam correctly (it appears to have been retarded quite a bit before)
- Switching to E85 - actually more like E70 now (winter mix)
I made a few other changes, mostly with high rpm longevity in mind:
- Kameari mechanical chain tensioner
- Ferrea super alloy valves
- titanium retainers
- lightened/balanced/polished the rockers
- fresh set of rings/bearings
The blue lines were from today on E85, the red from last year on Sunoco 94
I was able to go a few psi higher on E85 - these runs peaked at 29psi vs 26.5 on gas. Running approximately the same boost resulted in 628rwhp peak.
Just to put things into perspective, here it is vs. a stock Z06 on the same dyno...
_________________
Information is not knowledge
Knowledge is not wisdom
Wisdom is not truth
-FZ, Joe's Garage
Last edited by TimZ on Fri Nov 07, 2008 11:18 pm; edited 1 time in total |
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4SFED4
founding member
Joined: 25 Feb 2008
Posts: 48
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| Posted: Wed Oct 22, 2008 2:21 pm Post subject: |
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| Very nice... do you have any traction though? That is a lot of power in a very light car.
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TimZ
founding member
Joined: 25 Feb 2008
Posts: 120
Location: Dearborn, Michigan
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| Posted: Wed Oct 22, 2008 3:45 pm Post subject: |
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| 4SFED4 wrote: |
| Very nice... do you have any traction though? That is a lot of power in a very light car. |
I just switched to Mickey Thonpson ET Streets in 275/40-17. Amazing amount of traction - when the weather is above 75 degF or so, I get almost full traction in 1st and full traction in 2nd. I was shocked at how big a difference they made. The previous tires were Kumho V700s and I was having problems even in 3rd at times.
_________________
Information is not knowledge
Knowledge is not wisdom
Wisdom is not truth
-FZ, Joe's Garage
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PanteraTurbo
Stage 2
Joined: 17 Apr 2008
Posts: 58
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| Posted: Wed Oct 22, 2008 5:01 pm Post subject: |
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Thats awesome Tim. I always wanted to do something wild with an early Z car.
Blaine
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HotrodHans
Stage 2
Joined: 16 Aug 2008
Posts: 56
Location: West Chicago, IL
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| Posted: Thu Oct 23, 2008 3:13 am Post subject: |
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Very nice TIM. i wish the stock charts looked that good 
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nefarious
Site Owner
Joined: 19 Feb 2008
Posts: 148
Location: Everywhere In, FL
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TimZ
founding member
Joined: 25 Feb 2008
Posts: 120
Location: Dearborn, Michigan
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| Posted: Sun Oct 26, 2008 12:05 am Post subject: |
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I finally got the video uploaded - the camcorder's battery died about halfway through, but you can still get the gist...
http://www.youtube.com/watch?v=mtygZohgT28
_________________
Information is not knowledge
Knowledge is not wisdom
Wisdom is not truth
-FZ, Joe's Garage
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