Miata Turbo Forum - Boost cars, acquire cats.

Miata Turbo Forum - Boost cars, acquire cats. (https://www.miataturbo.net/)
-   DIY Turbo Discussion (https://www.miataturbo.net/diy-turbo-discussion-14/)
-   -   2.25" coupler, can it be "forced" to fit a 2" and a 2.5"? (https://www.miataturbo.net/diy-turbo-discussion-14/2-25-coupler-can-forced-fit-2-2-5-a-28946/)

jobambo 12-06-2008 03:28 AM

2.25" coupler, can it be "forced" to fit a 2" and a 2.5"?
 
Just wondering if a 2.25 silicon coupler can forced to fit on a 2" pipe and a 2.5"? Yes, i understand its not the "proper" way of doing things, but does anyone have any experience with this?

zoom2zoom 12-06-2008 04:40 AM

I wouldn't do it personally, too much of a chance of it breaking or leaking.

elesjuan 12-06-2008 04:40 AM

Duct tape.


Oh, JB Weld too.

Man thats 1/4" difference all around, just get the proper coupler.

zoom2zoom 12-06-2008 04:43 AM

$20 is much cheaper than a tow truck, that's how I see it anyway.

akaryrye 12-06-2008 04:56 AM

you are better off rigging something up with rubber ABS couplers and an ABS reducer than what you are talking about

miatamania 12-06-2008 11:52 AM

Needs more 2-2.5" reducer?

Toddcod 12-06-2008 12:12 PM


Originally Posted by jobambo (Post 338125)
Just wondering if a 2.25 silicon coupler can forced to fit on a 2" pipe and a 2.5"? Yes, i understand its not the "proper" way of doing things, but does anyone have any experience with this?

Carry that pipe to the muffler shop. They can inlarge or shrink the pipe that much. Probaly free to $5.00 for their time. Then you have a matching size.

patsmx5 12-06-2008 12:35 PM

Check out siliconeintakes.com They sell all the different couplers for cheap. You'll be pissed if you blow a coupler or tear one. Plus it could cause you to over-spin and damage your turbo. And who likes half-assing shit? I mean, if you're in a bind, sure. But don't rig it to save 20 bucks.

Savington 12-06-2008 01:19 PM

No.

cardriverx 12-06-2008 01:34 PM

I got a 2 inch coupler to fit a 2.25 inch pipe, just make a small slit in the coupler at the end to help slideing it onto the pipe, use some hairspray, and force that sucker on there. Its been holding with a v band clamp for 8 months now...

curly 12-06-2008 01:53 PM

you can put a piece of 2" hose around a pipe and then slip a 2.5" coupler over that, then clamp it down. but I doubt you'll get a silicone coupler to stretch out to be bigger.

Fireindc 12-06-2008 03:37 PM

Microwave it in a bowl of warm water. It works, but its ghetto.

cardriverx 12-06-2008 11:22 PM


Originally Posted by Fireindc (Post 338229)
Microwave it in a bowl of warm water. It works, but its ghetto.

word, get the silicone warm and you can get it to fit a .25 inch larger pipe than intended.

jobambo 12-07-2008 02:04 AM


Originally Posted by cardriverx (Post 338392)
word, get the silicone warm and you can get it to fit a .25 inch larger pipe than intended.

Still thinking about it.

jobambo 12-07-2008 02:11 AM

Another question, Whats wrong with using a regular rubber hose to connect 2 metal pipes together? Technically, there is no room for it collapse. Im reading that these silicon hoses are good for 100+ psi, why would i even need that much?

tronik 12-07-2008 03:44 AM

OEM turbos use rubber hose. You don't tend to see silicon from the factory. It works.
Advance has some exhaust pipe reducers in various sizes for a couple bucks each. It's a cheaper way to reduce pipe size than a silicon reducer.

patsmx5 12-07-2008 12:25 PM


Originally Posted by jobambo (Post 338416)
Another question, Whats wrong with using a regular rubber hose to connect 2 metal pipes together? Technically, there is no room for it collapse. Im reading that these silicon hoses are good for 100+ psi, why would i even need that much?

Rubber gets weak at high temps. So when you're boosting, the hotside charge pipes get really hot. And plain rubber will fail at these temps. Hence why silicone is used. It can take the heat.

For crying out loud, just buy a 20 dollar whatever you need and be done.

miatamoxie 12-07-2008 12:48 PM

I'd recommend looking through the car parts store's radiator hoses to find what you need. It's intended for moderately high temp, moderate pressure, and is cord reinforced. I've been using a 2" 90° bend from this method since May with a few thousand miles on the clock and it is in perfect shape. If you look closely at my sig pic, you'll see it coming off the compressor outlet.

jobambo 12-07-2008 03:43 PM


Originally Posted by patsmx5 (Post 338487)
Rubber gets weak at high temps. So when you're boosting, the hotside charge pipes get really hot. And plain rubber will fail at these temps. Hence why silicone is used. It can take the heat.

For crying out loud, just buy a 20 dollar whatever you need and be done.

Im a cheap SOB that wants to make a a 135 degree bend as cheap as possible.

patsmx5 12-07-2008 03:55 PM

I'm gonna laugh at you when your $6.35 solution fails you and damages your slightly more expensive turbo.


All times are GMT -4. The time now is 09:05 PM.


© 2024 MH Sub I, LLC dba Internet Brands