Adventures in PTE/TTE
12-24-2017, 01:31 PM
#1141
Junior Member
Join Date: May 2014
Location: Bama
Posts: 463
Total Cats: 121
Bad/Good news everybody!
I've been putting it off, but finally compression tested my motor that has felt a little weak, sounds "farty", and lost oil for the first time at NOLA. 140 dry, 160 wet across the board (HF tester). Even ignoring that the tester might inherently read low, the wet gaining 20psi across the board says it all, I think. Plan is to source a healthy NB1 motor and make the swap. Should be an easy 136whp for the TTE* reclass.
The onset of power/oil loss was so sudden I'm not sure what happened. If 100 degree 7 session days at TWS didn't kill it I'm not sure how a mild 40-70 degree at NOLA finally did it in. It's not even a 70k mile motor, don't judge me. Think this might make a good case for running better (than Mobil1) oil in this car, between 4.77's on the interstate and track duty.
I've been putting it off, but finally compression tested my motor that has felt a little weak, sounds "farty", and lost oil for the first time at NOLA. 140 dry, 160 wet across the board (HF tester). Even ignoring that the tester might inherently read low, the wet gaining 20psi across the board says it all, I think. Plan is to source a healthy NB1 motor and make the swap. Should be an easy 136whp for the TTE* reclass.
The onset of power/oil loss was so sudden I'm not sure what happened. If 100 degree 7 session days at TWS didn't kill it I'm not sure how a mild 40-70 degree at NOLA finally did it in. It's not even a 70k mile motor, don't judge me. Think this might make a good case for running better (than Mobil1) oil in this car, between 4.77's on the interstate and track duty.
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12-24-2017, 05:18 PM
#1144
Junior Member
Join Date: May 2014
Location: Bama
Posts: 463
Total Cats: 121
5w-30 no oil cooler. Still, it didn't feel noticeably different or start burning oil until NOLA, which was some of the coolest/mildest weather of the season. I also don't run the oil over more than two events due to street usage and a lot of short trips around town. Definitely on-board with using high end oil (Amsoil?) of a different weight if it prevents this moving forward. Not real pleased with myself killing a motor so prematurely.
I might try another tester just for a sanity check. The motor certainly isn't at the point of feeling awful tired, it's just slightly off from where I felt it was at the beginning of the year.
I might try another tester just for a sanity check. The motor certainly isn't at the point of feeling awful tired, it's just slightly off from where I felt it was at the beginning of the year.
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12-24-2017, 05:34 PM
#1146
Junior Member
Join Date: May 2014
Location: Bama
Posts: 463
Total Cats: 121
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12-25-2017, 11:38 PM
#1147
Junior Member
Join Date: Dec 2016
Location: Columbus, OH
Posts: 189
Total Cats: 47
Bad/Good news everybody!
I've been putting it off, but finally compression tested my motor that has felt a little weak, sounds "farty", and lost oil for the first time at NOLA. 140 dry, 160 wet across the board (HF tester). Even ignoring that the tester might inherently read low, the wet gaining 20psi across the board says it all, I think. Plan is to source a healthy NB1 motor and make the swap. Should be an easy 136whp for the TTE* reclass.
The onset of power/oil loss was so sudden I'm not sure what happened. If 100 degree 7 session days at TWS didn't kill it I'm not sure how a mild 40-70 degree at NOLA finally did it in. It's not even a 70k mile motor, don't judge me. Think this might make a good case for running better (than Mobil1) oil in this car, between 4.77's on the interstate and track duty.
I've been putting it off, but finally compression tested my motor that has felt a little weak, sounds "farty", and lost oil for the first time at NOLA. 140 dry, 160 wet across the board (HF tester). Even ignoring that the tester might inherently read low, the wet gaining 20psi across the board says it all, I think. Plan is to source a healthy NB1 motor and make the swap. Should be an easy 136whp for the TTE* reclass.
The onset of power/oil loss was so sudden I'm not sure what happened. If 100 degree 7 session days at TWS didn't kill it I'm not sure how a mild 40-70 degree at NOLA finally did it in. It's not even a 70k mile motor, don't judge me. Think this might make a good case for running better (than Mobil1) oil in this car, between 4.77's on the interstate and track duty.
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01-05-2018, 02:23 PM
#1148
Elite Member
iTrader: (7)
Join Date: Jan 2008
Location: Statesville, NC
Posts: 2,738
Total Cats: 319
Can everybody do me a solid and respond to this thread expressing your concern and general agreement?
nasaforums.com ? View topic - Sub-frame reinforcement proposal for PTE/TTE & PTF/TTF
Thanks!!!!!
nasaforums.com ? View topic - Sub-frame reinforcement proposal for PTE/TTE & PTF/TTF
Thanks!!!!!
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01-05-2018, 09:41 PM
#1150
Junior Member
Join Date: Dec 2016
Location: Columbus, OH
Posts: 189
Total Cats: 47
How does one prove that this isn't a performance enhancing modification? What are we to do if someone challenges it? The rule is quite hypocritical because at the same time, they allow stitch welding the entire chassis, which would only be done for a performance advantage. So we can reinforce our front subframe and stitch weld the entire chassis, but the e36 guys can't fix a known problem?
The Spec Miata rules at least call out the specifics of the modification.
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01-08-2018, 02:13 PM
#1154
Junior Member
Join Date: May 2014
Location: Bama
Posts: 463
Total Cats: 121
I've got a 55k mile BP4W on the way and first event is on 27th. Frantic season prep mode, engage. Going to go ahead and knock out tb/wp and seals since I already had a kit ready to go. Definitely throwing an oil cooler at this one, may also ithrow a coolant re-route at it. No reason not to I reckon. +11whp from last season and moving up to SM7's from RC1's. Let the hunt for records commence.
Unless my knowledge of how oil works is truly that lacking I don't believe there's any extra protection (on track at least) as 5w vs 10w is only at play when the oil is cold. You'd have to bump the second number up for more hot viscosity.
Unless my knowledge of how oil works is truly that lacking I don't believe there's any extra protection (on track at least) as 5w vs 10w is only at play when the oil is cold. You'd have to bump the second number up for more hot viscosity.
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01-08-2018, 06:27 PM
#1156
Where are you located, and how far south do you typically travel? I'm willing to accept that the guys in texas/arizona/cali have found an oil cooler to be a requirement, but I literally don't know of a single miata running an oil cooler in the great lakes region-- PTE, SM, or just general track day cars. It won't hurt anything to add one, but I definitely wouldn't consider it a requirement for a track day car that mostly runs northern tracks.
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01-08-2018, 06:49 PM
#1157
Where are you located, and how far south do you typically travel? I'm willing to accept that the guys in texas/arizona/cali have found an oil cooler to be a requirement, but I literally don't know of a single miata running an oil cooler in the great lakes region-- PTE, SM, or just general track day cars. It won't hurt anything to add one, but I definitely wouldn't consider it a requirement for a track day car that mostly runs northern tracks.
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