Mpt70 dyno results (kind of disapointed) tuning question.
05-16-09, 01:20 AM
#126
Eats, Sleeps, Dreams Rotary
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I'm not sure but I suspect it was just chamber heat that caused three of the six apex seals to warp. Makes sense given its low power output for the boost it was running alongside the way too rich mixtures. I think perhaps unbeknownst to the previous builder, the base timing was off as the front hub and crank pulley combination used had the timing marks shifted off. I don't know which direction they were off but it was by about 8-10*. I also don't know about the tuning done on the Microtech.
The reaming and machine work done on the motor however was very impressive. He had 8 additional dowel pins added and it was a stellar job.
B
The reaming and machine work done on the motor however was very impressive. He had 8 additional dowel pins added and it was a stellar job.
B
05-17-09, 08:31 AM
#127
I'm not sure but I suspect it was just chamber heat that caused three of the six apex seals to warp. Makes sense given its low power output for the boost it was running alongside the way too rich mixtures. I think perhaps unbeknownst to the previous builder, the base timing was off as the front hub and crank pulley combination used had the timing marks shifted off. I don't know which direction they were off but it was by about 8-10*. I also don't know about the tuning done on the Microtech.
The reaming and machine work done on the motor however was very impressive. He had 8 additional dowel pins added and it was a stellar job.
B
The reaming and machine work done on the motor however was very impressive. He had 8 additional dowel pins added and it was a stellar job.
B
again, new pulley/hub combos from Ray Crowe for like $170ish shipped. Guaranteed correct timing and cheaper than a new motor!
0 miles on that obviously. It's so nice and shiny it looks I paid someone to paint it. Who would have thought that these cars had clean parts and correct timing from the factory?
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