mtnwkr

So, I did the ISR mod today. Used 3" exhaust pipe with a 45* bend. It all went together pretty smoothly. I drove around for a bit and then checked the pipe. Boy was that puppy hot! I let it sit for almost an hour and checked again, still hot! very hot actually.. this thing is holding the heat in.
I don't want to have to spend more money now on header wrap. I was wondering If the PVC ISR will be much cooler? Thanks!

MaK92-4RnR

every metal surface in your engine compartment gets hot... being that its right above your manifold. ( heat rises )

thook

The heat you're experiencing is radiant from the engine. The plastic will not absorb or retain it so much. It cools faster and does not conduct like metal. And, best of all, it's freakin' cheap.

mtnwkr

Wow, thanks for the quick replies.

thook

Yes, indeed.....

iamsuperbleeder

thus why it's called the "intake silencer remover" mod, not a "cold air intake"

mtnwkr

yeah, but i don't like the idea of it getting hotter air than it did before. just wondering if i should switch to ABS instead of the steel..

aa1911

iTrader: (1)

yes, PVC pipe is MUCH cooler than any metal pipe; if you want an easy fix, use some thermal wrapping. Header wrap is $50-$70 depending on where you go (expensive) but some hot water heater insulation and some aluminum tape and I did a fair job of lowering intake temps; if you have metal it will retain LOTS of heat, my thin chrome intake stayed hot as crap for well over an hour! Exhaust pipe will be really hot too, insulate!!!

At least we're on the subject of "cold air intakes"... they are really "less restrictive hot air intakes"......

Don't feel bad, there's lots of folks in this world who don't know better!

mtnwkr

Thanks aa1911, that's what I was looking for. Guess I'll pick up some pvc tomorrow. Should be easy as I already have everything else I need.
I never mentioned anything about a CAI, I know the difference. Just didn't like how the new intake was going to deliver the air much warmer than stock. I don't see how that could be a good thing! The PVC sounds like the ticket.

thook

It's not a good thing. The airflow meter....or more specifically......the air intake temp sensor doesn't need to get unduly warm. The engine will run hotter and leaner than it really needs to.

aa1911

iTrader: (1)

It is good stuff and will be much cooler; I used 'electrical' pipe on my 4runner and it is fantastic, stays nice and cool. Any plastic intake material that folks are using will be much cooler than any metal piping. (hence the stock intake material for example....)

mtnwkr

Re built my ISR with some 3" grey conduit from home depot and some 3"x3" hose clamps. I didn't like the huge 3"x2" connectors. I cut the ends off the old intake to use as spacers where the ISR connects to the TB and VAFM to make the 3x3" clamps work. I think it looks better too.
It's a b1tch to get my dipstick out now, good thing it barely uses any oil.

Fishaa

No one has had any problems with the plastic option melting or anything like that have they? That would be my only worry with the plastic.

aa1911

iTrader: (1)

no, pvc or any other similar stuff won't melt at all. just makes it a PITA to check the oil

thook

True dat!

Schedule 40 is rated for withstanding electrical heat, if that says anything. IOW's it's designed not to retain it. Of course, if you had an electrical short, that would be different.

iamsuperbleeder

no but it burns pretty good, even if it does give off toxic gases in the process



but PCV will be fine under the hood there; it doesn't get THAT hot under there...

thook

I guess what I meant is.......oh, nevermind.....haha! READ peoples. It's all been discussed already, anyways.

thook

Schedule 40 is more than adequate, though. Just sayin'......

BTW, I've sent you an email. Check your inbox sometime.

paynemw

subscribed

ET

i got the flexible spectre intake hose from autozone for $20 it wasn't too hard to rig up and it can stretch and flex. all i have to do is pull on it in any direction and i can check oil pretty easy.