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Jay351 · 08-27-2007, 05:07 PM

Im getting parts to do the ISR mod on my truck.

But I have a few questions.

1. I know a few people used PVC pipe but all I can find is 3" ABS pipe, is that okay?

2.Can I use copper fittings to attach the valve cover vent tube and that other tube to the intake?

3. I cant find any pre-bent pipes so im going to use a 45degree ABS elbow, cut the pipe in half and feed it into the elbow, to make sure I have a good seal im going to use some clear silicone, again will this work?

4. I cant for the life of me figure out how im going to connect the 3" ABS pipe to the throttle body OR the airbox.
The outside diameter on said peices is 2.75ish, I cant find any flexible couplers that are 3" to 2.75".
I tried to use some 3" inside diameter hose but it was way to big for the tb or airbox.

I could order some online from the us but it would cost me over 50 bucks, so its not really worth it.

I went to 4stores and no luck.

08-27-2007, 05:07 PM	#1 (permalink)
Jay351 Contributing Member Join Date: Feb 2007 Location: maple ridge, British Columbia, Canada Posts: 8,557	ISR mod supplies questions Im getting parts to do the ISR mod on my truck. But I have a few questions. 1. I know a few people used PVC pipe but all I can find is 3" ABS pipe, is that okay? 2.Can I use copper fittings to attach the valve cover vent tube and that other tube to the intake? 3. I cant find any pre-bent pipes so im going to use a 45degree ABS elbow, cut the pipe in half and feed it into the elbow, to make sure I have a good seal im going to use some clear silicone, again will this work? 4. I cant for the life of me figure out how im going to connect the 3" ABS pipe to the throttle body OR the airbox. The outside diameter on said peices is 2.75ish, I cant find any flexible couplers that are 3" to 2.75". I tried to use some 3" inside diameter hose but it was way to big for the tb or airbox. I could order some online from the us but it would cost me over 50 bucks, so its not really worth it. I went to 4stores and no luck. __________________ 91 Pickup - xcab - 5sp - 3.0 - SR5 - 4x4 - 246,000kms \|2.25" catback w/ magnaflow cat + glasspack \| Weasy2k cams \| Aisin manual hubs \| Diff breather mod\| Marlin HD clutch \|3" BL \| es3000's \|2" AAL \|1.5" bj spacers \| ISR \| Alpine headunit \| 4" Infinity fronts/5" rears \| 4.88's \|Rear lockright \| 33x12.50" BFG M/T on 15x8" steelies \|Hella 500's \|4" reverse lights\| Grant GT \|Downey idler arm brace\|hella E-codes\| Marlin armor \| %100 Amsoil synthetic http://www.cardomain.com/ride/2572486 Last edited by Jay351; 08-27-2007 at 05:08 PM.