EGR Coolers, possible overheat risk?

[aidan]

No problems as yet, but will be taking my Ranger down to the south of France next week.
Basically its about 2000+ mile round trip, including alps and pyrennes, it'll be 30 degrees C, its mainly fast motorway.
Problem is, its a 2 ton truck, with only 110bhp, it does 85mph at around 3500rpm (its top speed is 96! at 4300).
The EGR is cooled and I have a feeling (probably completely wrong...) that this will be immense strain on the cooling system.

Is it worth blocking the egr off for the trip?

[OM617]

The EGR is an abomination to all Diesel engines. You should block the EGR permanently.

[DCC]

Is it worth blocking the egr off for the trip?

It is. Definitely. Less gunk will go into the engine, turbo will spin sooner and your engine will work just fine.

For the record: the other day we took an AFN engine off a Seat Ibiza for a swap into a mk2 golf. We took the intake appart and we ended up (after some cleaning) with a BALL (like a tennis ball) of dirt. The EGR is now blocked and the engine will go into the car next week.

[jtanguay]

to answer about the heat risk... yes.  we had a '94 dodge caravan with a bad egr.. couldn't figure out what the hell was going on!  when cold it ran fine.  when hot at idle it would miss, and stall.  driving at speed it was fine though.  just imagine all that hot exhaust gas flowing back into your intake.  now the idea behind it is good... clean exhaust emissions.  but what it does to your motor is pretty bad.  the fine oil mist from the non-total sealing rings will mix with the small amounts of carbon in the exhaust to form a nice sticky, carbon residue that coats intake parts and actually reduces the flow.  i bought a TDI engine and the size of the ports must have been about 75% less when taking into consideration the amount of gunk buildup!

if you want it to look stock (for emissions purposes or whatever) then just take off the egr, and put a metal plate the same size (with holes at the appropriate location) and sandwich that plate between the exhaust & egr.  stealth egr delete  :wink: