Does anybody know what would happen if a standard recirc dump valve was fitted the wrong way round???

for those who have read my other thread , some thing i found today, was the std dump valve was fitted wrong way round ...ie, arrow pointing towards the intercooler area, rather than towards the air intake ..

Could this cause a significant increase in pressure, enough to cause head gasket failure....???


many thanks

Frank

 

Well it won't have been opening much...

 

Thanks for the above reply,

does anybody else know of the effects of fitting a std recirc dump valve, back to front.

Many thanks

Frank

 

I would assume the unit would be totally inoperative and therefore the functions of a dump valve (to release boost pressure during throttle lift off and hence preventing turbo damage) would be lost.

I would speculate that the worst damage this would cause (depending on boost pressure, length of time unit fitted incorrectly) is stress to the turbine fins. If the turbo is functioning correctly (ie bossting without whinning noises) then you may have got away with it in my opinion. Some cars do run turbos without dumpvalves (as reassurance!)

 

This is not going to cause head gasket failure, the dump valve has no effect on overall boost pressure, unless its fully open in which case it will have quite an effect

Dave