i am running the stock setup, mine are bad. what sizes do i need. thanks.

 

http://www.turbohoses.com/Couplers.htm

 

www.hosetechniques.com

better customer service than turbo hoses. th sent me the wrong **** and didn't allow me to return/exchange them. *******...

 

www.atpturbo.com sells them cheap. t-bolt clamps are cheap from there too. check em out.

paul

 

I don't know this for a fact, but I've heard (from very reliable sources) that the TurboHoses couplers are not as strong as the HoseTechnique ones.

(I'm using the ones from HoseTechniques)

 

https://www.rx7club.com/showthread.p...hreadid=284548

 

thanks guys. i appreciate it.

 

you can get them through rx7store.net for $14 each, but they just have turbo hoses send them to you. stock pipes its a 2.375" ID for the hard pipes that rx7store sells, its 2.5"ID

 

Most import shops have tubes of them in stock, or at least they do around here. I just picked some up for my intake. I got two 3inch red ones for $15.

 

PM hightempsilicons, I think that's his user name. Anyways, I got some silicone vac. line from him and it was super high quality and an awesome price, impecible customer service as well.

 

I use hose technique too.
Bought their set for the FD3S.. Cost like 130 bucks

 

I'm not sure, maybe your just generically calling them silicone couplers... but if you get oil in your intake (like many do), you don't want silicone couplers do you? I understand that silicone doesn't play well with oil.

 

i just assumed that the colored couplers are made of silicon. is that incorrect?

 

Hosetechniques.com came through for me perfectly when I did my Vac. hose simplification. But I use the intake piping couplers that came with my Greddy FMIC, they are rubber but wrapped with some kind of material on top, I love those except once they get dirty you cant seem to clean them...

 

I got the stuff available from Baker Presision, http://www.bakerprecision.com/purosil7.htm
It is only available in a flat orange but it is some awsome hose. Being a function before form person I have no problem with that. It is has a grippy outside so your clamps dont slip and it has held up quite well to the Phoenix heat plus RX7 heat for a few years now. I had some of the glossy stuff before and after a couple years of heat cycles and oil from the intake they start to crumble.

 

this thing about silicone not working with oil is waaaaaaaaaay over-rated. you can have a mist of oil running through your silicone lines. . . no problems. the problem occurs when you try to use silicone lines for fuel line or oil line or something like that. it breaks down quick. . . though, my dad (not knowing what it does) threw one of my silicone vac lines on a bike of ours and its still there. . . strange to me. it is a bit weaker, though. he refuses to take it off. . . hahaha. his deal, not mine. hahahaha.

silicone is fine when NOT using it to pass oil/fuel solely.

paul

 

SAMCO couplers have worked the best. They have the thickest walls. I got mine from AIM Tuning (Advance Indy Motorsports Tuning) www.aimtuning.com

 

What is the thickness of their walls?

 

0.25-inch thck walls

Visit http://www.sporthoses.com/

They sell Samco Sport hoses exclusively. Order online.

Werth clamps work very well. T-bolt clampes are too bulky IMHO.

 

hosetech coupler comes with T boltS?

 

I'm with Tom93R1. I prefer the Baker Precision turbo hose because it does NOT have really thick walls. The hose is silicone and reinforced with some sort of fiber mesh; it's indestructable and not as bulky as anything else I have seen. It allows the connections to vibrate and move a little bit without eventually coming loose or leaking because the hose itself is a little flexible; those of you with intercoolers that actually use the hoses as mounting points will love it. Regular thick stuff requires much more clamp pressure to keep it from being pulled off the joints.

You can get a foot of it for about $20 and this will make 4 couplers. I've been using it for years and it shows no signs whatsoever of coming apart, hardening or oil "leaking" through and I have never had to tighten or adjust any clamps with it. The spares are still sitting in my toolbox.

It only comes in orange but it will last forever.

 

Yeah, if you're using stock IC piping, and 10 psi boost, thin walled couplers make sense. I've had the GReddy blue couplers (that came with the FMIC kit), and running 11-15 psi--only the Samco Sport couplers (5-6 mm thick walls) worked the best, especially if the intake elbow coupler rubbed up against the stock R1 strut brace like mine does. The Samco Sport's thick walls were impervious to this minor rubbing.

 

Yeah, $3.75 each is the cheapest. Nice compact design too. I'm placing an order to replace the cheezy worm gear ones on my GReddy FMIC coupler kit! Thanks, rotorbrain!

 

You're making the assumption that thin= not as strong. Baaaaaaaad This stuff will handle whatever amount of boost you wish to run.

The silicone itself is just the "skin", the carcass inside that is what makes it tough. Same as a tire: The carcass inside the tire carries all the loads, the rubber just makes it airtight and provides traction.

 

They are 5-mm wall thickness, ~0.20-inch thick.