Dyno sheet - torque all over the place and low !

Discussion and technical advice the SW20 MR2. 3S-GTE, 3S-GE, 3S-FE etc
Anything and everything to do with maintenance, modifications and electrical is in here for the Mk2.

Moderators: IMOC Moderators, IMOC Committee Members

garry goodall
Posts: 78
Joined: Fri May 06, 2011 7:47 pm
Location: Chesterfield

Re: Dyno sheet - torque all over the place and low !

Post by garry goodall »

tooth out on crank, both camshafts are correct, could any damage have been caused? probably been like it since came in country.
Mr2 Rev3 Turbo
Marf
Posts: 6728
Joined: Tue Jan 17, 2006 4:56 pm
Location: West Sussex

Re: Dyno sheet - torque all over the place and low !

Post by Marf »

I'll defer to anyone with more experience, but I should think being a tooth out won't have caused any long term problems.

Will you be putting it back on the dyno?
Kongaroo
Posts: 1574
Joined: Wed Aug 31, 2005 8:26 am

Re: Dyno sheet - torque all over the place and low !

Post by Kongaroo »

Timing belt off a tooth will mean you were running with either retarded or advanced ignition timing depending on which way it skipped. Both will give you lower power - one via not enough ignition advance and the other via knock from too much ignition advance detected by the knock sensor which will cause the ECU to retard the timing (safety feature to reduce the chance of damaging the engine).

What did your base timing look like when you checked it with the diagnostic ports bridged? Going by your dyno graph it looks like you were running advanced and getting knock response from the ECU?
garry goodall
Posts: 78
Joined: Fri May 06, 2011 7:47 pm
Location: Chesterfield

Re: Dyno sheet - torque all over the place and low !

Post by garry goodall »

yeah it will be definitly be put back on the dyno :thumleft:

with it being none interference and all that i wouldnt have thought i would have damaged anthing either

cant get it lined up again correctly, done it three times and still got it a tooth out, going to bash at it again tomorrow now

what you said for the timing to keep retarding does make sense now looking at the dyno chart
Mr2 Rev3 Turbo
Post Reply

Return to “MR2 MK2 1990 - 1999 NA & Turbo”