2.5" Dump pipe for 4JB1T

[isuzurob]

i just made a 2 1/2 dump pipe and exhaust for my bighorn today, can tap the holes and just put bolts in, i just pull the plate out and leave the rod in there on other ones

[damo667]

Sweet
Will I get away with just removing intercooler, then unbolting dump pipe and manifold and pulling whole thing out with turbo attached?

[isuzurob]

Just undo dump pipe off turbo, leave manifold and turbo on the truck, you can get the flap out without removing the dump pipe if you really want, removing it doesnt do anything though

[damo667]

Cool cheers for the advice, I'm going to get on to it on Saturday..
When reinstalling, do you just use holts exhaust paste?

[damo667]

I got the sucker out without removing turbo+manifold, I had to remove the studs from the turbo and remove the oil filter. It still took a bit of jiggling..
I'm going to cut the spindle out tomorrow and put a plate over the hole. (using existing bolts to attach the plate)

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A metal gasket came out of the turbo end can I reuse it? should I chuck some exhaust paste or liquid gasket on it?

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Cheers

[isuzurob]

Good work, ive always reused the gaskets, can put maniseal or high temp silicone as its post turbo

[damo667]

Yeah I ended up putting maniseal on it,
Cant believe the difference just taking that spindle out made.. the engine revs free-er and the turbo seems to spool up quicker..
Will be interesting to see if upsizing the final section of pipe will make a noticeable difference..

Cheers for your help guys..

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[stardog]

I bought a 2.5" dump pipe off eBay not long ago cost around $230 you can get 2 types 1 for facing up oil filter or the later back facing oil filter.

[damo667]

Thats pretty reasonable, I might consider that next time I've got it apart
Was that in Aus?

[stardog]

I got it on Ebay a mob up in Brisbane.