Re: Pulleys
Originally Posted by Bulldogger
Hawk,
I already know about that kit, I was more interseted in the 181. At a certain point too much boost will cause too high cylinder temps and generate too much overal heat. I would like to go the most boost possible but still run safe. I would also like to find A/F ratios with the 181. I don't want to go water meth injection. Also if anyone is looking for the ASP pulley kits they can be ordered through K1 Motorsports for $899 plus $25 shipping.
Interesting Bulldogger.
I have the 185mm pulley on order with LET and I will now ask a few more questions.
I was looking at pulleys in terms of percentages.
The ASP 178mm pulley increases boost 14% over stock.
The LET 185mm pulley increases boost 20% over stock.
The only time the engine will actually see an increase of MAX boost above what the OEM pulley is capable of providing would during the last 14% or 20% of Engine RPM.
I read on the MB forum some guy who made a 192mm pulley (or something like that) and experienced a problem with fuel delivery at WOT.
I suppose if you were going to be spending a lot of time at the 1/4 mile track with your XF at redline - heat would then be an issue.
Last edited by BrianBrave; Nov 17, 2007 at 10:26 PM.