Hello,..

Been lurking here for years , need a bit of advise please.,

I've recently refitted my dump valve back onto my Series 1 ( purely nostalgic reasons )

I've noticed that sometimes during a high load situation I.e planting foot in 2nd or 3 rd gear the dump valve hisses and the car wont accelerate past 4k revs ..like the clutch is slipping ..would you guys suggest clutch or leaky D.v?

Seems to be intermittent..if i boot it from 1st gear 5 out of 10 times its fine.

( ,..should probably take it off and try it and see what happens..)

many thanks in advance

p.s car is running 190HP , uprated clutch etc.

 

Probably one for the rs turbo section

But sounds to me as if the DV piston is leaking! Be worth taking it back off and trying or trying another DV

 

thank you .

ill try move it over if i can find the section

 

Needs a new spring in the DV but if it's a sealed DV you'll need a new DV.

 

Thank you for the input.

I was under the impression that the spring is only there to keep it closed idle. When its boosting the pressure should be equal either side etc.

Also its intermittent which is odd. Can a spring half work ?

Thanks again

 

Yes a weak spring opens to early ..and it's common.

 

Ok thanks ill have a better look this weekend.

Nice car btw. Great thread

 

FYI

Took out dump valve. Problem went away.

No more 90's tsssssssscht for me

 

Good man ..I know a lad selling a new MSD DV for 40 delivered

 

Cheers.

Ill leave it as is for now thanks . Love the sound but ill settle for flutter for now. Its a bailey one, had it apart . Might have a look for some spares at some point.

 

Ah even better ..yea you can buy service kits if you decide to ever put it back on .