FAST 102 INTAKE is FULL of OIL ?
05-06-2012, 07:47 PM
#1
FAST 102 INTAKE is FULL of OIL ? OK I have a '72 Nova we just finished the conversion on with a fresh LS1/AUTO setup as follows,
-Owner built the motor with stock rods,polished crank,Diamond Pistons -6 cc dish,RHS 205 heads milled to 59cc[ GM 52 mls gaskets],Vindicator
cam,block was very clean & just honed,Fast 102/102.
Now the puzzle .....ALL Cylinders are holding 148to 152lbs comp. , oil pressure is 40psi at idle & 50 to 60psi when cruising .ALL Intake/Throttle Body & PCV lines were run as stock was .
It started smoking BAD & have traced it to oil in the Intake ALOT & is burning it back thru the motor .I pulled the PCV line & ran it to a seperate catch bottle & only have the 2 lines off the passenger side head giong to the Throttle Body & the Intake.
Pulled Intake COMPLETELY Apart & cleaned good.Owner drove the car about 7-8 miles to his house real easy & Intake was soaked with oil AGAIN .I am not exact but guess compression is about 11:1 or so .For now the car has manual brakes so the booster line from the In take is capped off fwit.
Is there a need for catch cans or evac lines ?Thanks for any help
-Owner built the motor with stock rods,polished crank,Diamond Pistons -6 cc dish,RHS 205 heads milled to 59cc[ GM 52 mls gaskets],Vindicator
cam,block was very clean & just honed,Fast 102/102.
Now the puzzle .....ALL Cylinders are holding 148to 152lbs comp. , oil pressure is 40psi at idle & 50 to 60psi when cruising .ALL Intake/Throttle Body & PCV lines were run as stock was .
It started smoking BAD & have traced it to oil in the Intake ALOT & is burning it back thru the motor .I pulled the PCV line & ran it to a seperate catch bottle & only have the 2 lines off the passenger side head giong to the Throttle Body & the Intake.
Pulled Intake COMPLETELY Apart & cleaned good.Owner drove the car about 7-8 miles to his house real easy & Intake was soaked with oil AGAIN .I am not exact but guess compression is about 11:1 or so .For now the car has manual brakes so the booster line from the In take is capped off fwit.
Is there a need for catch cans or evac lines ?Thanks for any help
05-06-2012, 08:22 PM
#2
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Check all the PCv routing again Mayby there is a failed part in the system not doing it job. Somehow its not ventalating correctly pushing all the oil into the intake.
Last edited by reeperz28; 05-06-2012 at 08:27 PM.
05-06-2012, 09:45 PM
#4
ALL PCV routing is as the stock setup.I ran the PCV Valve [ on the driver side valve cover back]itself into a catch can by itself to see if this would change this problem ,The other 2 lines on a LS1 come off the passenger side valve cover & feed the Throttle Body & the Intake .It still fills the Intake with oil as with the stock routing .
Last edited by wantsum410; 05-06-2012 at 09:51 PM. Reason: more info
05-06-2012, 10:35 PM
#5
If im reading correctly it sounds like your catch can routing is wrong. What can do you have? LS1 OR LS6 valley cover? There are two lines from the cc....one to the PCV side and the other to the intake. Stock hose to the TB stays and everything else is blocked off on the passenger side.
Was the FAST new or USED? Culd have already been oil in it if used.
Was the FAST new or USED? Culd have already been oil in it if used.
05-07-2012, 06:26 AM
#6
The line from the the throttle body will run to the front passenger side nipple.
The rear driver side and rear passenger nipple and pcv groument will come together into a single ling, then pcv, then catch can top.
Catch can side will goto Intake manifold.
The rear driver side and rear passenger nipple and pcv groument will come together into a single ling, then pcv, then catch can top.
Catch can side will goto Intake manifold.
05-07-2012, 08:57 AM
#7
Routing of lines are as stock.......front passenger side line to Throttle Body
back passenger side line to Intake
YES these 2 lines are joined with a y into 1 line & are fed into the driver side PCV valve .
The PCV valve line was routed into a catch can by itself just to see if this changed the problem.I am a conversion shop & have done many swaps but never had this issue.This is the first Fast 102/102 a customer has used ....it just happened to be on a fresh motor.
My own '72 SS Camaro is running FAST 92/92 with ALL lines in stock routing with no problems.And yes this Intake was BRAND NEW .It has filled with oil 2 times now & was properly cleaned each time before installing again.
back passenger side line to Intake
YES these 2 lines are joined with a y into 1 line & are fed into the driver side PCV valve .
The PCV valve line was routed into a catch can by itself just to see if this changed the problem.I am a conversion shop & have done many swaps but never had this issue.This is the first Fast 102/102 a customer has used ....it just happened to be on a fresh motor.
My own '72 SS Camaro is running FAST 92/92 with ALL lines in stock routing with no problems.And yes this Intake was BRAND NEW .It has filled with oil 2 times now & was properly cleaned each time before installing again.
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05-08-2012, 08:51 AM
#9
ALL of the details of the motor are listed in the first post.It is a street car with a nice 346 .If a breather filter will help I will try it ,I am using one on my car .I have never heard of this issue or had it myself so here we are looking for answers .
