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http://murileemartin.com/wordpress/w...ltstill-20.jpg
^^^ Which gauge was I supposed to be lookin at??? :scratch: |
It's the 17th one to the right.... Remember I told u this 100 times
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Thats pretty crazy and that iron was really burned up I like reading things like this because it provides knowledge to others (including myself) who arent too experienced with rotaries
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Originally Posted by 7dust
(Post 10922984)
http://murileemartin.com/wordpress/w...ltstill-20.jpg
^^^ Which gauge was I supposed to be lookin at??? :scratch: |
I guess my question is - what is THIS SHIT?
http://i155.photobucket.com/albums/s...3120111453.jpg ^^^ What is the cause of the scratches above the exhaust port? I know these housings weren't pristine prior to assembly but I don't remember them looking like bad. Also, I notice a lot of running engines I disassemble have these deep marks. I'm pretty sure they aren't seals coming out of the motor because the entire housing usually gets chewed pretty good. In fact, most of the shitty emergency use only housings have these claw marks right above the exhaust port. Am I just (un)lucky or is there a common cause for this? |
airfilter? anything gouged like that has injested something or spat the very tip of the long section of the apex seal, a section 1 -2 mm long
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Originally Posted by Karack
(Post 10919247)
on track dedicated cars it doesn't hurt to overfill the crankcase a tad, about .3 quarts to prevent starvation on hard cornering or an oil pan baffle to keep the oil in the pan.
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Originally Posted by DriveFast7
(Post 10923595)
I overfill by a quart just to be sure. One talented engine builder said to check the dipstick with the engine running....
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Originally Posted by 7dust
(Post 10923346)
I guess my question is - what is THIS SHIT?
http://i155.photobucket.com/albums/s...3120111453.jpg ^^^ What is the cause of the scratches above the exhaust port? I know these housings weren't pristine prior to assembly but I don't remember them looking like bad. Also, I notice a lot of running engines I disassemble have these deep marks. I'm pretty sure they aren't seals coming out of the motor because the entire housing usually gets chewed pretty good. In fact, most of the shitty emergency use only housings have these claw marks right above the exhaust port. Am I just (un)lucky or is there a common cause for this?
Originally Posted by bikeboy23332
(Post 10923660)
if you used silicone on your pan gasket over filling by a quart will blow it out. keep it on full
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We DID have two turbo failures in the race prior to the last one.
One turbo lost a turbine fin only and the other one grenanded. I think adding a half quart over full in addition to an oil pan baffle would be a good thing for us. |
Originally Posted by 7dust
(Post 10923980)
We DID have two turbo failures in the race prior to the last one.
One turbo lost a turbine fin only and the other one grenanded. I think adding a half quart over full in addition to an oil pan baffle would be a good thing for us. |
man that looks like it hurt, how much was it putting down?
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Too many RPM's can trash housings, though I have not seen what the damage looks like.
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Originally Posted by Rx7_Nut13B
(Post 10918752)
Scott said the thrust bearings didn't show heat stress or wearing so I don't think it was a end play issue.
You forgot to say this engine was run in enduro racing with 16-24 hours (per race)of hard full turbo power running. The mileage is way over 1000 miles but it still died early. This motor was build with alot of tired parts. Feb race 225laps = 535.5 miles Apr race 280laps = 700 miles Jun race 267laps = 635.5 miles Oct race 229laps = 545 miles Dec race 223laps = 557.5 miles Figuring the track run time at 70:40:58 almost 71 hours Total = 2973.5 + a test-an-tune day that Scott bet it to death and it over heated when it blew the turbo water feed line. |
Thermo pellet failure??? I still look at the discoloration on the side irons. What did your oil pressure look like? I f'ed up on a porting job and cut in the wrong direction and fear wiping the oil off of the oil control rings, this post gives me nightmares.
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Thermo pellet has been bypassed on all my engines.
This was a stock port motor. We have all ready determined the cause of the failure was oil starvation. |
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