yes anothet egr block question!

[tassie wombat]

I've done a bit of reading,and I'm getting differant answers,so here goes, For people that have blocked their egr valve on a 4.2 tdi (factory intercooled) are egt's and boost readings higher,lower or the same? Also do I only block the egr side or the exhaust side as well ?thanks in advance.

[tassie wombat]

anyone?????????????????

[krbrooking]

I blocked mine (99 2.8l gu) on noticed no rise in temps, actually ran slightly cooler on hills and very slight rise in boost (almost not noticeable).

When you think of it the air going into your combustion chamber is now cleaner with no recycled gas going back in.

All I did was block it just after the egr valve between the manifold where the gasket goes so that's all it looks like.

[tassie wombat]

thanks for that

[nissannewby]

I noticed the coolant temp run cooler and fuel economy slightly improved on my 4.2. However I removed the lot of it, disconnected all the plugs removed butterfly from intercooler removed heat exchanger and rerouted crankcase breather to atmo.

[tassie wombat]

thanks for the replies fellas.

[the ferret]

Hey Tassie, just block it at the EGR where it meets the inlet manifold.
You will notice the turbo will spool up a bit quicker.
EGT and temps should remain the same.
Cheers, the ferret.

[tassie wombat]

thanks again mate.

[WYLD333]

My boost raised a little bit not worth worrying about tho and egt's also raised until I completed my nads, however urs is a 4.2 may b different. Block egr at inlet manifold

[tassie wombat]

can anyone tell me what the purpose of the heat exchanger is??(i think its what it is anyway,2" diameter cylinder just down from the egr valve)

[nissannewby]

Yeah its there to cool the exhaust gases before entering the intake.

[tassie wombat]

job is done,ended up doing both ends of the pipe,exhaust end was a mongrel,tried undoing the nuts and the studs came out as well,made it hard to get them back in,had to unbolt the turbo brace to get studs back in.went for a quick drive,turbo starts to spool at about 1500rpm and full boost at about 1800rpm,boost preasure didnt change stayed at about 12psi,egt while cruising at 100kmh is definetly lower,not sure how much but the gauge(autron lcd)starts at 275.c and it doesnt move from that until the engine starts working harder(hills etc)used to sit on about 300/325.c,so thanks to everyone for your advice,cheers,wombat.

[the ferret]

Onya Tassie, glad it all went well, sorry I couldn't supply the block off plate, my insurance company says that if I make engine parts, they won't cover me!!!!
The dorks have no Idea lol.
Cheers, the ferret.

[tassie wombat]

Onya Tassie, glad it all went well, sorry I couldn't supply the block off plate, my insurance company says that if I make engine parts, they won't cover me!!!!
The dorks have no Idea lol.
Cheers, the ferret.
no worries mate,i had some 1.6 s/s sheet laying around,left over from another job. ,i was just being lazy!!,

[tassie wombat]

so now ive done this do i need to fit a catch can like the provent 200? if yes do we have any pics of these fitted to the 4.2 tdi's, and do you need the larger provent 200 or would the mini be ok?? thanks