3" downpipe clearance (minime with hf adapter 14b turbo) **PICS***
 

i am nearing completion of my stockpile of parts i need to finish my minime b7/z6 boosted at 8 psi with a 14b, using a hf manifold and a weir racing adapter plate. i bought a prefabbed 3" downpipe...i was wondering if anyone with a similar setup had any clearance issues with the radiator fan/slave cylinder. thanks.

Re: 3" downpipe clearance (minime with hf adapter 14b turbo)
 

I told ya it would be tight if not fit!

Can you get a pic?

Re: 3" downpipe clearance (minime with hf adapter 14b turbo)
 

whould have been better to fab it up yourself, so many things come into play when it comes to a downpipe, like the manifold, the turbo, which side it exits, with or without ac and ps

Re: 3" downpipe clearance (minime with hf adapter 14b turbo)
 

im still waiting on my exhaust housing, and my adapter plate. as soon as those get here, ill do a test fit, take pics, and post them up.

Re: 3" downpipe clearance (minime with hf adapter 14b turbo)
 

i have a 93 civic ex with a d15b, hf manifold, and a tdo4 turbo. i kept my ac and power steering. i had to make a downpipe cause i had no rom at all. it is very tight. if you dont have ac then you might be ok

Re: 3" downpipe clearance (minime with hf adapter 14b turbo)
 

See, that's why I had my DP fabbed up at the exhaust shop instead of buying one. I'm not harping on you just stating. LOL. Anyway, I have seen people cut the fan SHROUD to expose the fan a little but it allows some more room for that huge pipe. I didn't cut mine and run 2 1/4 right off then to 2.5 then 3 cat-back. I might cut it in a later build though. Understand?


JP

Re: 3" downpipe clearance (minime with hf adapter 14b turbo)
 

you shoulda just used 2.5".

its just a 14b....

Re: 3" downpipe clearance (minime with hf adapter 14b turbo)
 

yeah. the only reason i bought the 3" is cause it was prefabbed and cheap and it had the cutout, and the d15(minime)z6 with a 14b is only temorary until i get the d16 built and i plan on using a big wheel 16g...so ill benefit from a 3" i think. im probably gonna run 2.5" exhaust for now, and upgrade once the engine is actually done, cause i dont know how long it will be.

got the 14b exhaust housing today, so i can probably get a rough idea without the adapter plate.

Re: 3" downpipe clearance (minime with hf adapter 14b turbo)
 

I feel like this was overlooked.... its prefabbed... who's making prefabs that are designed for adapter plates and HF manifolds? You might alignment issues, let alone clearance issues.

Re: 3" downpipe clearance (minime with hf adapter 14b turbo)
 

Well the 3" is overkill for the 14b but if you plan on upgrading to a 16g down the road then it makes sense. You might have a hard time fitting the 3" DP on there. Here's a picture of my HF/Weir plate setup using a 2.5" DP

http://img311.imageshack.us/img311/8851/dp4ew.jpg

As you can see there's not much room between the DP and the slave cylinder, maybe half an inch. To fix this, swap to an auto tranny ;) j/k. What you can do though if it won't fit is bang on the DP with a hammer where the bleeder for the slave cylinder would hit it and make a dent in the DP. Do this just enough so it fits.

Re: 3" downpipe clearance (minime with hf adapter 14b turbo)
 

Maybe Weir can design some adapter plates that offset the turbo half an inch to the drivers side.

Re: 3" downpipe clearance (minime with hf adapter 14b turbo)
 

i bought it from bumblezc...it was made for an identical setup except on an ef...so its cable and there is no issues with the slave cylinder.

i must say ill probably end up going with jon's idea with the hammer (accordepicenter also recommended this). theres a nice torch at work that might make it easier too. your 2.5" looks close and the 3" is definetly wider than that, with the wastegate recirculated into the exhaust. well, the turbo will be put together tomorrow night, and the intake manifold should finally be off the head i bought (one bolt). and ill do a test fit and get some pics.

thanks.

Re: 3" downpipe clearance (minime with hf adapter 14b turbo)
 

here are some pictures to give you an idea of how everything lines up. i think ill be okay with the radiator fan, maybe cut a little off the fan shroud....but ill DEFINETLY have major issues clearing the slave cylinder. id have to hammer the wastegate dump tube in half...so i may have to relocate it or cut it and empty to the atmosphere...and weld a plate in the pipe. its nice to finally see everything together though...makes it seem so much closer to being finished.

https://i7.photobucket.com/albums/y2...omockup010.jpg
https://i7.photobucket.com/albums/y2...omockup003.jpg
https://i7.photobucket.com/albums/y2...omockup001.jpg

^^^to give an idea of how far the slave cylinder sticks out.

https://i7.photobucket.com/albums/y2...omockup009.jpg
https://i7.photobucket.com/albums/y2...omockup008.jpg
https://i7.photobucket.com/albums/y2...omockup005.jpg
https://i7.photobucket.com/albums/y2...omockup004.jpg

https://i7.photobucket.com/albums/y2...omockup007.jpg

nice side view...(the turbo has since been rotated)

let me know what you think as far as what to do with the downpipe/wastegate dumptube. thanks.

Re: 3" downpipe clearance (minime with hf adapter 14b turbo) **PICS***
 

I can't tell extremely well from the pics, but it looks like your DP will hit the slave cyl even without the dump tube there right? How much does it look like you would have to hammer it in?

As far as the dump tube goes, there is no way it will work as is. I would cut it just where it comes off the turbo, rotate it so it goes more towards the front of the car and reweld. Vent it to atmosphere.

Re: 3" downpipe clearance (minime with hf adapter 14b turbo)
 

+1 2.5" is LOTS for a d with a 14b

Re: 3" downpipe clearance (minime with hf adapter 14b turbo)
 

He is planning on building the motor and using a 16G down the road, that is why. Nothing wrong with preparing for future upgrades.

Re: 3" downpipe clearance (minime with hf adapter 14b turbo)
 

He'll have to prepare to upgrade to a different manifold.

Re: 3" downpipe clearance (minime with hf adapter 14b turbo)
 

Umm, no

Re: 3" downpipe clearance (minime with hf adapter 14b turbo) **PICS***
 

Dude, you're proposing he bashes in half of his downpipe for the master cylinder.
If he is building his engine and going for a high power setup, he needs to get an exhaust manifold that will allow for him to do it right.

Re: 3" downpipe clearance (minime with hf adapter 14b turbo) **PICS***
 

why would his down pipe be near the master cylinder? :P

Re: 3" downpipe clearance (minime with hf adapter 14b turbo) **PICS***
 

lol, i had to correct my post once because i said that jago was proposing he bash in his exhaust manifold.

Re: 3" downpipe clearance (minime with hf adapter 14b turbo) **PICS***
 

jon was saying to hammer in the downpipe, not the manifold. (edit: nevermind, i got what you were saying.)

i think it will clear fine without the dump tube. ill probably end up relocating the dump tube, and make a dent in the downpipe if necessary. thanks for your help, ill post pictures when its finished.