SYNFULL
Enthusiast
I am still trying to get the bugs worked out of my Roe Heads and S/C install. I am using the basic tune that Sean sent me and the car runs pretty good but has some issues. Namely a chirping noise that I have posted about. http://forums.viperclub.org/rt-10-gts-discussions/613587-supercharger-chirping-noise-problem.html I think it is detonation but Octane Booster didn't help. I also tried taking some timing out (where it was 12.5 degrees I lowered it to 12.1) and that may have made it a little better. It happens mostly in second gear when you load up the motor.
I have spoken to quite a few people about it- Sean Roe, Tony Armour and 3 mechanics that I have taken for rides. Naturally Sean and Tony are just going by my description and my log files so it's kind of tough to diagnose from long distance. I have redone the T&D rockers to make sure there are no issues there. I also did compression test on the cylinders and here are the results
#2 - 180
# 4 - 180
# 6 - 180
# 8 - 190
#10 - 175
#1- 170
#3 - 170
#5 - 165
#7 - 190
#9 - 190
Looks like cylinder 5 might be a little low- I am going to retest. Seems like the battery was getting weaker there and may have made a difference.
In the meantime I have booked an appointment at a shop that has a Dynojet Dyno for Monday. First they are going to try and diagnose the chirping sound. Then they are going to Dyno it. What would anyone's advice be on tuning the car while it's at the Dyno shop? Should I fax Sean the results and have him email me the changes so I can have them do another run to see if it's right? Naturally this assumes that there are no severe mechanical problems anywhere causing this sound that I am hearing.
Thanks
Gary
I have spoken to quite a few people about it- Sean Roe, Tony Armour and 3 mechanics that I have taken for rides. Naturally Sean and Tony are just going by my description and my log files so it's kind of tough to diagnose from long distance. I have redone the T&D rockers to make sure there are no issues there. I also did compression test on the cylinders and here are the results
#2 - 180
# 4 - 180
# 6 - 180
# 8 - 190
#10 - 175
#1- 170
#3 - 170
#5 - 165
#7 - 190
#9 - 190
Looks like cylinder 5 might be a little low- I am going to retest. Seems like the battery was getting weaker there and may have made a difference.
In the meantime I have booked an appointment at a shop that has a Dynojet Dyno for Monday. First they are going to try and diagnose the chirping sound. Then they are going to Dyno it. What would anyone's advice be on tuning the car while it's at the Dyno shop? Should I fax Sean the results and have him email me the changes so I can have them do another run to see if it's right? Naturally this assumes that there are no severe mechanical problems anywhere causing this sound that I am hearing.
Thanks
Gary