Originally Posted By: Hokiefyd
Originally Posted By: quint
You probably did lose 30hp, because its supposed to be 20 degrees advanced. Unless you mean 20 degrees over the 20 it should have been at, meaning 40 BTDC at idle, when it should be 20...?
20 degrees advanced beyond where it should have been. I followed that up with "I set the timing to where it was supposed to be", but I apologize if it was still unclear. After fixing the timing, I could not get my '95 KA24E to ping any. It was really quite a tough little engine; I really enjoyed it. During really hot weather, that cooling fan clutch would engage and it'd really sap the power, but the A/C always blew cold. Tough little truck. One of the ones I wish I still had.
I'm surprised you were able to drive it at all that advanced..the knock sensor must have been pulling a lot of that timing out. I put mine up around 26-28 btdc once and it didn't drive well at all, knocked and pinged like crazy. I drove it less than a mile, put it back to 22 and made a mental note not to mess with the timing again.
Something to note, there seems to be a lack of consensus around the various forums on how to actually set the timing on the KA's. Some do it with the throttle position sensor (TPS) unplugged, others leave it plugged in. Some say it doesn't matter. I always do it with it unplugged, as there is a noticeable shift in the timing at idle between being plugged in and not being plugged in. My factory service manual clearly says to unplug it, but there are those on some forums adamant that it doesn't matter...I think they are driving around with some messed up timing.
Originally Posted By: lawnguy
I wonder if a k&n air filter will free up around 5hp ? THese filters are approx $50.
I tried a "cold air intake" on mine a long time ago, not only do I think it did not help any, I remember thinking that it might have detracted from the low end and mid-range power some. I have no idea if it really added or reduced power, I'm just going by what I felt while driving it. It made some nice noises at high rpms, but it definitely didn't add any excitement as far as power was concerned.