vwbusman66
Stößelstange über alles
- Joined
- Oct 12, 2016
- Location
- SE MI
Did I mention it has 5.30:1 gears in it?
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Did I mention it has 5.30:1 gears in it?
- What is a typical redline for B20? Anyone running this cam or similar have a good idea of how fast to spin it somewhat safely?
Questions that I still have...
Does this thing really need race fuel? It has VP110 in it as it came to me that way, but it seems excessive. Anyone with anecdotal evidence for what is necessary in a B20? I'd be curious if there are some accepted timing limits, compression limits, or power limits that people have found on pump gas so I have something to base the decision off of once it sees some dyno time.
The brakes seem solid (no pun intended) but I may look into something a bit more robust in the future. Is there a straightforward swap or an easy way to add proportioning to these cars? It has the dual line front calipers with the single line with the accumulator thingies for the rears. Under braking it seemed to want to swap ends pretty easily, made for quick trail braking at autocross but not sure I want to feel that at 90mph on track.
What would the board say is good oil pressure on a race motor? It's seeing 35psi at idle, and 90-100psi at full chat. Judging from the oil bottles that came with it, they were putting 20w50 in it, which seems excessive...
Do you know what the compression ratio is? If it's under 10.5:1 you can probably get away with 93 octane. What's the total ignition timing set to?
164E front ventilated rotors and calipers are a direct swap for the 140 solid rotors.
The accumulator thingies you refer to are actually proportioning valves. You should be able to hear them make a thunk sound when you step on the brake pedal hard if they're working.
Brake hoses are a known issue on these cars. What does it have and what shape are they in?
The oil pressure is actually a little high. ~10psi/1000rpm is the norm. Is the gauge accurate?
If the documentation I have for the motor is correct it is 11.0:1. These just have mechanical advance right? So the base timing at idle should indicate how much if any they have changed it for the whole rev range? I'm borrowing a timing light tonight, I seem to have misplaced mine.
Good to know about the brakes. I will check the prop valves and make sure they are functioning correctly, is there a way to adjust them if they are working?
The car has stainless brake lines for all the soft hose.
Source some Penske non-adjustables for cheap and valve them for the car
Find some more 'modern' front UCAs that fit and shorten the front suspension towers
Not sure what your budget is but I can have JRZs custom built for basically any application. The RSone starts around 600 / corner.