My 1988 2wd Sierra cossie is showing 100 on two cylinders and 120 on the other two should be 140 + so not good ...I inderstand.

Pistons rings gone or head gasket ? Any idea as car has no power .

Any idea how much it would cost to repair it in Kent ?

Thanks

 

Is it losing coolant?

Martin

 

Yes sir,

 

Yes it is Martin.

Gonna ask the Mechanic to have a check.

Hope , it's not gonna be too expensive .

 

Then it's likely the HG (especially if original).

Martin

 

Pull plugs out look down bores if head gasket has breached into cylinders you will have very clean piston crowns.

 

I believe it's an aftermarket and hope that it's just the head gasket .

 

Would it effect the piston rings ?
Hope it would not be an expensive fix

 

No it will be approx £150 for gaskets and bolts.
Has it overheated.? Reason i asked is most garages will just skim the head for their own peace of mind when in fact most do not need doing. Hence why most cossies are running more compression. Only have the head skimmed if its warpped out of spec.

 

Would have an answer on Monday or Tuesday to be sure .

Crossing fingers

 

It was overheated but car was switched off in time.

After cooling down, it could start easily and could be driven but no power.

 

Ok make sure it has a group A headgasket fitted and standard correct head bolts. Dont be fobbed off with a ARP stud and nut kit. And while its apart a new belt will be a safe bet.

 

And the most inportant thing is timing it up correctly as if you dont know cossie's you can get it wrong.




This is how it should be done. Notice the crank pulley is on the lug NOT the V groove as a pinto would be. Result would be piston to valve contact.

Regards
Paul

 

Ok, would tell my Mechanic to get it right.

Today he is gonna open the head . Am pretty worried as I sinked it quite a bit allready . Brought the car from Singapore to UK . Has tons of parts and is running on a M800 Motec with 8 injectors .

 

Thanks for the diaphragm mate .

Appreciate all the help coming.

You guys are amazing

 

Let us know whats happening. It is possible with all that work done on it it may have a triple layer gasket.

Again if its 2wd and still on the 205 block i would advise if it has arp studs to remove and fit std head bolts. CHECK all threads in block for cracks.

 

 

I am not sure how to see the block and whether it's a 205 block .

Waiting for the Mechanic to open the engine .
Triple layer gasket ? Wow .. Why would anyone do that ? Isn't a thicker head gasket better ?

 

205 is stamped on the block which is a 2wd block unless it has small core plugs then its a 205 RS500 block.
200 blocks are stronger due to 4x4 transmission.

 

Nice, thanks for sharing the information

Car would only be open on Friday . I am in singapore and the car is in Kent (UK) .

 

By looking at that it's not going to have the original HG.

Martin

 

It's probably using the Group A head gaskets .

 

I would agree Martin would interesting to find out. I used one of the early cometic gaskets which failed due to the stud and nut kit never again.

Looks like a 4x4 head so hopefully a 200 block too.

 

When it was running well, it was around 450bhp .