roflcopter
New member
- Joined
- Sep 30, 2013
- Location
- Lower Alabama
I mentioned this in my project thread but I thought it may have a bit wider of an audience here...
I have a car with somewhat unknown history, full on racecar, 1970 144. I have emails from a decade ago (previous owners and shops) saying the car was tuned for VP110 and some slightly more recently ones saying it was delivered with a mix of VP110 and pump gas in it, and also another stating it can be run on pump gas but 'reduced power' may be experienced. Reduced power to me sounds like they are flirting with some knock at that point.
I'll list off everything I know (read: think) has been done to it:
B20
Heavily ported head (not sure which one)
Isky Max Competition cam (vv101)
Chevy chomoly pushrods and valvetrain parts
11.0:1 compression (supposedly, not sure if pistons or shaving or what)
DCOE40s
KG Trimning header
KG Trimning intake manifold
Reworked distributor (supposedly 36-37btdc at wot/rpm)
Rev limiter set to 8000 currently
Lightened flywheel
4.27 gears
M40
Now my two big questions are:
A) does this motor need VP110 to be safe? Can it be cut to ~100 octane and be good?
B) and this will be answered tomorrow on the dyno, what kind of whp can be expected?
I'm mostly asking the power question so I can gauge how tired the motor is (if it is at all) and I'm curious what a setup like this is supposed to make. Numbers will be posted once I have them!
I have a car with somewhat unknown history, full on racecar, 1970 144. I have emails from a decade ago (previous owners and shops) saying the car was tuned for VP110 and some slightly more recently ones saying it was delivered with a mix of VP110 and pump gas in it, and also another stating it can be run on pump gas but 'reduced power' may be experienced. Reduced power to me sounds like they are flirting with some knock at that point.
I'll list off everything I know (read: think) has been done to it:
B20
Heavily ported head (not sure which one)
Isky Max Competition cam (vv101)
Chevy chomoly pushrods and valvetrain parts
11.0:1 compression (supposedly, not sure if pistons or shaving or what)
DCOE40s
KG Trimning header
KG Trimning intake manifold
Reworked distributor (supposedly 36-37btdc at wot/rpm)
Rev limiter set to 8000 currently
Lightened flywheel
4.27 gears
M40
Now my two big questions are:
A) does this motor need VP110 to be safe? Can it be cut to ~100 octane and be good?
B) and this will be answered tomorrow on the dyno, what kind of whp can be expected?
I'm mostly asking the power question so I can gauge how tired the motor is (if it is at all) and I'm curious what a setup like this is supposed to make. Numbers will be posted once I have them!