DP Stud and fastener issues - Suggestions?
#22
1. I wasn't looking for the issue before, so maybe took more than a day to develop
2. I never tried more than low boost (~250whp) since I was going to wait to the afternoon for high boost in case of running into issues (that way I'd only lose a few hours of track time, not half the day!) but a rain shower just after lunch removed all grip for the rest of the day so I didn't try more boost.
Though despite this, the seeds of doubt have been planted so maybe I should be planning for a TSE kit in my future....
Does anyone know which MX5 series in the UK is closest in pace to spec miata? I'm trying to work out how hard many people have pushed this kit and comparing back to spec miata lap records seems to be the benchmark. (For reference, the track was Rockingham International Super Sports Car and I was lapping just under 1:35s on 205 Federal RS-R on 8s (and 225 Federal RS-RR on 9s -oddly no faster), ~250whp and ~#2750 weight since I was taking (heavy!) passengers all day)
#23
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Are you asking how hard people have pushed TSE kits, or how hard people have pushed FM kits?
I can answer the former pretty definitively - an off-the-shelf TSE kit is the basis for the fastest Time Attack Miata in the world (949Racing's car). Roughly 20 seconds faster than a Spec Miata on a 2-minute course
I can answer the former pretty definitively - an off-the-shelf TSE kit is the basis for the fastest Time Attack Miata in the world (949Racing's car). Roughly 20 seconds faster than a Spec Miata on a 2-minute course
#24
Are you asking how hard people have pushed TSE kits, or how hard people have pushed FM kits?
I can answer the former pretty definitively - an off-the-shelf TSE kit is the basis for the fastest Time Attack Miata in the world (949Racing's car). Roughly 20 seconds faster than a Spec Miata on a 2-minute course
I can answer the former pretty definitively - an off-the-shelf TSE kit is the basis for the fastest Time Attack Miata in the world (949Racing's car). Roughly 20 seconds faster than a Spec Miata on a 2-minute course
#25
I've been having these same issues on my FM2 kit at 220hp. Also have lost center section bolts before. 1 weekend at NCM and every bolt was loose down to the down pipe. Including my FM inconels.
Have a TSE inconel set and going to try resbond on everything down to the down pipe this year. Also planning on adding another exhaust hanger. Right now its unsupported to the rear subframe. If I can't get more than 1 weekend still, it's time for the EFR.
Have a TSE inconel set and going to try resbond on everything down to the down pipe this year. Also planning on adding another exhaust hanger. Right now its unsupported to the rear subframe. If I can't get more than 1 weekend still, it's time for the EFR.
#27
Again, the studs & other fasteners on my (resbonded) FM hardware have not been an issue. No loosening despite 300+ rwhp and Laguna Seca lap times a second or more below the Spec Miata record. No, I'm not as fast as Andrew around that track, but that's got more to do with my driving and the suspension that was on the car than anything related to the motor.
AutoFreak57: did you resbond the FM studs?
--Ian
AutoFreak57: did you resbond the FM studs?
--Ian
#39
Side note I use a long runner mild steel schedule 40 weld ell manifold. It's is not near as robust as a cast Iron short manifold like TSE's It needs even more protection from the weight of the exhaust system. It is not without troubles. after some design refinement and reinforcement to the collector portion of it and a good design for a support bracket for the turbine housing It will generally last about a season of track use at best. The mild steel does allot better with thermal expansion than stainless but eventually enough heat cycles will crack it.
Last edited by bbundy; 12-19-2018 at 07:21 PM.