Spookyfish rebuilding daily/track car
#161
Are you repacking the bearings with that redline supersexy bearing grease?
The spec miata kids found that the oem bearings would last several seasons, but that new oem bearings have a 1.5 weekend lifespan. Something about using cheap china grease in the new oem stuff. There's a writeup somewhere on specmiata.com
The spec miata kids found that the oem bearings would last several seasons, but that new oem bearings have a 1.5 weekend lifespan. Something about using cheap china grease in the new oem stuff. There's a writeup somewhere on specmiata.com
#163
Damp, wet, rainy track day at Assen. Beat the hell out of some 12yr old Potenza's in about 45 laps. Did a 2:31.6. Pretty happy with that as the only cars that were significantly faster had aero, rain tires or is called KTM X-Bow, or any combination of the above.
Power was very useless apart from the three straights and mostly hindering corner exit. Did 70% of the layout in 4th gear. Two 3rd gear corners and a bit of 5th gear. Top speed 115mph today.
Ducting held up very well, water was at tstat opening temp 90% of the time. Oil 10* above that.
Really want a set of rain tires now as the guys on rain race rubber where flying and pulling 1g in the rain.
Power was very useless apart from the three straights and mostly hindering corner exit. Did 70% of the layout in 4th gear. Two 3rd gear corners and a bit of 5th gear. Top speed 115mph today.
Ducting held up very well, water was at tstat opening temp 90% of the time. Oil 10* above that.
Really want a set of rain tires now as the guys on rain race rubber where flying and pulling 1g in the rain.
#165
Former Vendor
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Join Date: Nov 2006
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Nice build, Spookyfish!
If you haven't done the rear diff bushings....don't!!! The other bushings were fine. The rear diff made the NVH almost unbearable at highway speeds above 70mph. That, coupled w/ the Mazdaspeed motormounts made my car go from fun autox car to "I hate driving on the highway!"
If you haven't done the rear diff bushings....don't!!! The other bushings were fine. The rear diff made the NVH almost unbearable at highway speeds above 70mph. That, coupled w/ the Mazdaspeed motormounts made my car go from fun autox car to "I hate driving on the highway!"
You want NVH? Go try some MMR motor mounts, then drive yourself to the dentist so he can re-insert your fillings.
#166
?? What did you do wrong? I just did a car with ES diff bushings and MS motor mounts, and there is no discernible increase in NVH. The customer was really worried about it, and after driving the car once even he said he couldn't tell a difference - aside from the phenomenally improved shift feel.
You want NVH? Go try some MMR motor mounts, then drive yourself to the dentist so he can re-insert your fillings.
You want NVH? Go try some MMR motor mounts, then drive yourself to the dentist so he can re-insert your fillings.
#167
Former Vendor
iTrader: (31)
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 15,442
Total Cats: 2,099
You really need the right tools. I wouldn't bother without a press or an air hammer. Torch the outside to separate the adhesive they use, and then just hammer or press them out. Once you figure out the first one, the second is easy. With the right tools, it really is a 1 hour job.
#168
You really need the right tools. I wouldn't bother without a press or an air hammer. Torch the outside to separate the adhesive they use, and then just hammer or press them out. Once you figure out the first one, the second is easy. With the right tools, it really is a 1 hour job.
#174
Here's Nick while we're pressing in the new bushings, note the piece of aluminum between the bushing and the press piston.
You wouldn't need to set backlash to swap pumpkins complete... only if you take the diff/ring gear out of the pumpkin.
#177
The MS motor mounts are still rubber but a stiffer variety... it's actually hard to tell any difference with a stocker and MS in your hand (unless your mounts are really fucked up, mine weren't). The ES poly diff mounts are about as stiff as the suspension bushings... ie much harder than stock but still have some give to them. I'd think the nylon would be stiffer yet. Probably less NVH than solid aluminum mounts, more than stock, very slightly more than poly.
#178
?? What did you do wrong? I just did a car with ES diff bushings and MS motor mounts, and there is no discernible increase in NVH. The customer was really worried about it, and after driving the car once even he said he couldn't tell a difference - aside from the phenomenally improved shift feel.
You want NVH? Go try some MMR motor mounts, then drive yourself to the dentist so he can re-insert your fillings.
You want NVH? Go try some MMR motor mounts, then drive yourself to the dentist so he can re-insert your fillings.
#179
I drive them, daily. Horrifying, especially when cold its ridiculous. If it idles smoothly bellow 1k, it's relatively smooth and quiet at stop lights and such. Very loud once RPMs start gaining. However when I'm driving "spiritedly" its amazing the feel. I want to say I can feel what the car/engine is doing 100% more.