Two small turbo related questions

[nuvolarossa]

QUESTION #1 TB INTAKE BOOT:
 
I need to buy a silicone hose reducer to swap the rubber intake boot, as it will explode under boost. Who bought it can tell me the internal diameter on the throttle body side? Need to know if a 3,5" ID is the right size or if it needs something smaller as I only "eye-measured" it... I need to reduce it to 2" pipe.
 
 
 
 
 
 
 
QUESTION #2 OIL PAN
people here with turbo e36 can show me where you drilled the oil pan for turbo discharge?
 
Christmas holidays may be boosted
thank you

[bearsbmw]

QUESTION #1 TB INTAKE BOOT:
 
I need to buy a silicone hose reducer to swap the rubber intake boot, as it will explode under boost. Who bought it can tell me the internal diameter on the throttle body side? Need to know if a 3,5" ID is the right size or if it needs something smaller as I only "eye-measured" it... I need to reduce it to 2" pipe.
 
 
 
 
 
 
 
QUESTION #2 OIL PAN
people here with turbo e36 can show me where you drilled the oil pan for turbo discharge?
 
Christmas holidays may be boosted
thank you

You can run that stock boot easly with a little modification and black hockey tape but if it's super old I wouldnt... mine see's boost all the time... It's nice to keep it and not re-route the ICV... when I presurized my intake to check for leaks the boot easly took 20psi with my simple modification... as for the oil pan you will see step up's to where the oil pan gasket is and on the last step up is where I did a tap.. I should mention you get one chance at the tap and it has to be perfect or you will find yourself geting a bung welded

[strypt]

This is how i made my installation w/o a boot. But you'll need a tig welder...

Edit: Hm attach photo didn't work..

[nuvolarossa]

This is how i made my installation w/o a boot. But you'll need a tig welder...
 
Edit: Hm attach photo didn't work..

Thanks, as I don't have TIG I'll do like that to the next TB, I have three of them:D but I'm out of home for a week and can't measure
 
For now I want to know what size of silicon reducer will fit
(sure with TIG would be the best)
 

as for the oil pan you will see step up's to where the oil pan gasket is and on the last step up is where I did a tap.. I should mention you get one chance at the tap and it has to be perfect or you will find yourself geting a bung welded

I'll do higher I can sure, it's not the first pan that I tapped, it's only that I don't know where is the oil level inside the pan and how is the interior of the pan

[bearsbmw]

take your oem boot off and messure the throtle body part like a taylor would messure your waist...oil level inside is erelivant when the car is off as it has all fallen back to the pan...if you tap where I told you, the oil will make a safe loop while the car is running

[nuvolarossa]

Ok, I understand.
Will a standard drill fit in there or the small angular(I don't have this) is required? just don't remember the space and the car is a lot of miles far from me now

[bearsbmw]

small standard air drill was used on mine... Do you have any base map's for the m42? ... Good luck!

[nuvolarossa]

small standard air drill was used on mine... Do you have any base map's for the m42? ... Good luck!

I don't need the base map using a piggyback (PCIII) but it does only fuel. I modified it to raise or lower fuel RPM and MAP based instead of RPM and TPS... you'll see my posts next weeks with all details.
If just I can find a easy and not too expensive spark retard unit it would be great, so I can retain the stock ECU for MOT issues and use the other two piggybacks to run the engine better if I need to raise boost to 12-15psi. (As I have a T3 60 trim )