what will the leakdown test tell me that a compression test won't?
also... as I'm tuning it, some quick things I could touch on:
1) What should the spark plug gap be with my setup? I think I have em at .050 but not sure. MSD, accel coil, pertronix, stock distributor (for now),
2) In order to have some really predictable timing, is there an affordable solution as far as new distributors go? I don't wnat to spend $400 on an MSD thingy. But I'm not convinced my stock distributor's advance is very reliable and the thing could be dropping sparks at high rpm.
3) Appears I lost the dyno chart, but aside from the A/F, the other interesting thing was that the HP curve shape looked about what I wanted it to look like (peaked around 5800, pulls till 6000), but the torque curve had a huge spike at around 3500 and started coming back down. Is there any reason for that? The dyno shop owner was surprised it didn't keep building, and whatever caused that probably caused my peak #'s to be lower (had the curve followed what it was doing up until 3500rpm, it would have corresponded to higher torque numbers throughout, and obviously higher hp figures).
The A/F ratio had just leaned out around that rpm range, which may explain some of it.
4. Anyone know a place in socal that could do some of this (particularly the timing, thats been a pain... i can handle jetting it and such) for a couple hundred? The last shop I asked was quoting like $400, and thats without any dyno #'s to prove it. Or if someone wants to come out and help me time it one weekend I'll buy beer/lunch
5. Any definitive opinion on 15w40 or 20w50 oil? You generally hear synthetic oil picks up a few horses, but as far as power goes I won't be losing anything noticable with heavier dino oil right versus lighter dino oil (im not considering using synthetic, for what thats worth)?
also... as I'm tuning it, some quick things I could touch on:
1) What should the spark plug gap be with my setup? I think I have em at .050 but not sure. MSD, accel coil, pertronix, stock distributor (for now),
2) In order to have some really predictable timing, is there an affordable solution as far as new distributors go? I don't wnat to spend $400 on an MSD thingy. But I'm not convinced my stock distributor's advance is very reliable and the thing could be dropping sparks at high rpm.
3) Appears I lost the dyno chart, but aside from the A/F, the other interesting thing was that the HP curve shape looked about what I wanted it to look like (peaked around 5800, pulls till 6000), but the torque curve had a huge spike at around 3500 and started coming back down. Is there any reason for that? The dyno shop owner was surprised it didn't keep building, and whatever caused that probably caused my peak #'s to be lower (had the curve followed what it was doing up until 3500rpm, it would have corresponded to higher torque numbers throughout, and obviously higher hp figures).
The A/F ratio had just leaned out around that rpm range, which may explain some of it.
4. Anyone know a place in socal that could do some of this (particularly the timing, thats been a pain... i can handle jetting it and such) for a couple hundred? The last shop I asked was quoting like $400, and thats without any dyno #'s to prove it. Or if someone wants to come out and help me time it one weekend I'll buy beer/lunch
5. Any definitive opinion on 15w40 or 20w50 oil? You generally hear synthetic oil picks up a few horses, but as far as power goes I won't be losing anything noticable with heavier dino oil right versus lighter dino oil (im not considering using synthetic, for what thats worth)?
