13BT Rebuilt.....Couple of serious problems!
Thread Starter
Joined: Aug 2001
Posts: 2,515
Likes: 1
From: MISSISSAUGA, ONT. CAN
13BT Rebuilt.....Couple of serious problems!
Alright, maybe someone can help me, or give me an idea....
The motor is an s4 13bT. It was running great before being rebuilt except for a possibilty of burning some coolant (i say possible because i just found out that the pressure tester i used to determine that was faulty!) Anyways..... Once the motor was apart the following was done:
New seals and springs for everything except i reused side seals
Used housings (I did all the checks according to the FSM)
Used Plates
Racing beat intake and exhaust porting done by me.
Thermal Pellet mod (done using the washers)
Increased oil pressure (Using washers trick)
Now, on One of the ports it was pretty close to the oil seal area, but i decided to try it anyways. (i didnt mind if it smoked a LITTLE bit)
Thats it for the motor
The only other change done to the car during this period was i added a fuel cooler and large filter.
Now this is what happens :
The car is burning TONS of oil, i mean TONS. In less than a minute i can see the oil level drop, and there is so much smoke i cant see. BUT also within that one minute time, my oil gets full of fuel aswell! I turned down my microtech to as lean as i could to still have it running. I dont have my wideband hooked up ofcourse due to the exhaust being full of raw oil.
I took off my upper intake and looked down the runners, the primarys were perfectly clean like when i installed them. However, the secondaries were black with oil...
I know most people would say that its the porting, but would a slight cut into the oil seal area really cause THIS much of an issue? and Fill the oil with fuel? I've changed the oil after each the startups, so its always an issue no matter how much i turn up and down the microtech.
Please give me some ideas before i open the motor up again!
Thanks
The motor is an s4 13bT. It was running great before being rebuilt except for a possibilty of burning some coolant (i say possible because i just found out that the pressure tester i used to determine that was faulty!) Anyways..... Once the motor was apart the following was done:
New seals and springs for everything except i reused side seals
Used housings (I did all the checks according to the FSM)
Used Plates
Racing beat intake and exhaust porting done by me.
Thermal Pellet mod (done using the washers)
Increased oil pressure (Using washers trick)
Now, on One of the ports it was pretty close to the oil seal area, but i decided to try it anyways. (i didnt mind if it smoked a LITTLE bit)
Thats it for the motor
The only other change done to the car during this period was i added a fuel cooler and large filter.
Now this is what happens :
The car is burning TONS of oil, i mean TONS. In less than a minute i can see the oil level drop, and there is so much smoke i cant see. BUT also within that one minute time, my oil gets full of fuel aswell! I turned down my microtech to as lean as i could to still have it running. I dont have my wideband hooked up ofcourse due to the exhaust being full of raw oil.
I took off my upper intake and looked down the runners, the primarys were perfectly clean like when i installed them. However, the secondaries were black with oil...
I know most people would say that its the porting, but would a slight cut into the oil seal area really cause THIS much of an issue? and Fill the oil with fuel? I've changed the oil after each the startups, so its always an issue no matter how much i turn up and down the microtech.
Please give me some ideas before i open the motor up again!
Thanks
how was the ports close to the oil seal area? I know on my last rebuild I had a problem with the side seals and that caused alot of gas to get into the oil. Did you use a feeler gauge to clearance inbetween the side and corner seals?
Thread Starter
Joined: Aug 2001
Posts: 2,515
Likes: 1
From: MISSISSAUGA, ONT. CAN
On the centre plate, one of the intake ports that got ported, edged slightly into the path of the oil control ring.... As far as i know on the side seals, the clearances were good....Ofcourse i will check them again when the motor gets pulled later in the week.
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