16V twin screw SC?
#16
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Originally Posted by a4sfed928
I've looked at this site and I can't read it but I thought he was running approx 9psi from the MAP log. Do you know if he increased the boost from what the MAP log shows? I have an AutoRotor that I'm installing on a 1980 16V and I'm having trouble finding injectors that fit the stock rail.
Edit: D'oh!
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#17
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Originally Posted by a4sfed928
I've looked at this site and I can't read it but I thought he was running approx 9psi from the MAP log. Do you know if he increased the boost from what the MAP log shows? I have an AutoRotor that I'm installing on a 1980 16V and I'm having trouble finding injectors that fit the stock rail.
Is it ideal? No, but how much boost are you shooting for? If under 10psi, start small & get that to work. I'm running just fine with the stock injectors with 6+ pounts of boost. I say 6+ because on a cold 40 degree morning like today, it's making more power than the 6.1 pounds of boost I saw on the dyno in July. Air / Fuel is still perfect.
Everyone is always in such a hurry to swap out injectors. Fueling the car under boost is the easy part (at lest with a centrifugal it is). The hard part is day to day driveability.
If you are running an aftermarket ECU - then yes, everything I just said is out the window.
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Originally Posted by Hacker-Pschorr
The stock injectors are 24lbs - more than enough for 14psi on these cars. Tim Murphy has pushed the stock S4 19lb injectors to over 10psi with no issues.
.........
Everyone is always in such a hurry to swap out injectors. Fueling the car under boost is the easy part (at lest with a centrifugal it is). The hard part is day to day driveability.
.
.........
Everyone is always in such a hurry to swap out injectors. Fueling the car under boost is the easy part (at lest with a centrifugal it is). The hard part is day to day driveability.
.
IF..IF...you really jack up the Fuel pressure. Sure...and the level it will take, i would DEFINTITLY check the hoses on an older 16 V car and make sure you have a pump to push it..
Or...
Use a Sharktuner and then have a pump adequete to flow that much fuel at/near 90-100% duty at the lower pressure.
On an 16v car, i dont think any of those are an opiton yet?
With the prices and "simplicity" of 16v cars, id love to see some good HP numbers added to them!
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Originally Posted by Tony
With the prices and "simplicity" of 16v cars, id love to see some good HP numbers added to them!
#20
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Originally Posted by Tony
With the prices and "simplicity" of 16v cars, id love to see some good HP numbers added to them!
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#21
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Originally Posted by Tony
IF..IF...you really jack up the Fuel pressure. Sure
Like I said, maybe not 100% ideal, but it works.
Originally Posted by Tony
i would DEFINTITLY check the hoses on an older 16 V car and make sure you have a pump to push it..
[QUOTE=Tony]Use a Sharktuner and then have a pump adequete to flow that much fuel at/near 90-100% duty at the lower pressure.
On an 16v car, i dont think any of those are an opiton yet? [QUOTE=Tony]
No Sharktuner for the L-Jet. Even the 951 updates do not work on the 928 due to different voltages in the systems.
Originally Posted by Tony
With the prices and "simplicity" of 16v cars, id love to see some good HP numbers added to them!
Originally Posted by Andrew Olson
Agreed! Sure would be cool to get a nice setup for say, less than $10k, that would spank some butt!
Originally Posted by Fabio421
How does over 400 rwhp and 450 lb/ft of torque sound on a 4.7l sound?
And yes, there is a dyno chart available. It is a car here in FL. You actually know the car and the builder. ![ooops](https://rennlist.com/forums/graemlins/icon501.gif)
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Jean-Louis posted around 380rwhp with a 10.4:1 Euro with low boost & no intercooler. This setup survived 2-3 track weekends with two drivers. Anyone who knows JL is aware he does not ***** foot around Road America.
Hell, if I cranked up the timing I could rip off one impressive dyno chart. I would never dare drive it that way
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Originally Posted by Hacker-Pschorr
Bingo!
Share the details – not sure how I missed this car if it was posted here in the last 5 years. Sounds cool.
Share the details – not sure how I missed this car if it was posted here in the last 5 years. Sounds cool.
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#25
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If it's who I think it might be - the car isn't L-Jet anymore & has had other modifications. Not hat it matters, just worth mentioning.
Hell, there's a 2.2 liter in Green Bay putting 722 down to the wheels
Anything is possible with the right parts.
Hell, there's a 2.2 liter in Green Bay putting 722 down to the wheels
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Originally Posted by Hacker-Pschorr
Hell, there's a 2.2 liter in Green Bay putting 722 down to the wheels
Anything is possible with the right parts.
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anything is possible with the right parts, the ***** to do it and the brain to get/keep it operable.
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#27
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[QUOTE=Tony]IF..IF...you really jack up the Fuel pressure. Sure...and the level it will take, i would DEFINTITLY check the hoses on an older 16 V car and make sure you have a pump to push it..
I am tring to avoid this with the proper sized injectors since mine need replaced anyway. I think I'm getting close to a solution now.
I am tring to avoid this with the proper sized injectors since mine need replaced anyway. I think I'm getting close to a solution now.
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Originally Posted by a4sfed928
I am tring to avoid this with the proper sized injectors since mine need replaced anyway. I think I'm getting close to a solution now.
Speaking from experience here, just trying to help. If you found a way to dial fuel back under vacuum for non-boost driving. Awesome!!!! Please share!!!
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I'm not able to post the builder, there is a gag order in place. Lets just call the builder Schmoopie.
Hacker is on the right track. I believe the car is still running the L-Jet however it has been modified to use a MAF instead of an AFM to increase throttle response and allow for laptop tuning. Its actually an affordable route to take to get a tuneable fuel system in an OB.
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#30
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Originally Posted by Fabio421
I believe the car is still running the L-Jet however it has been modified to use a MAF instead of an AFM to increase throttle response and allow for laptop tuning.
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I've thought about doing this. Maybe in the future I'll drop the L-jet system or switch to an adapted system like this.
I'll be switching my 79 CIS to either the EuroS EFI system or an aftermarket setup such as autronic before I add any boost.