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Two.06l Final Event At Compak Attak

Swiper the Fox
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Marko R1 Grand Master

Marko R1

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sorry guys only just got internet access...

the small crack in the block that was repaired last time engine was freshened has opened up weeping coolant out. In the interests of my own and others safety i decided not to run the car. Looking back i probably should have grouted the block as the crack is below the bottom of the welsh plugs and grouting would have stopped it.

Its very strange as when the car was rolled back on Friday no coolant was leaking out of it. A little later i jacked the front of the car up in preparation for welding a lambda sensor bung at the base of the dump pipe and coolant started to drip from the rear of the engine. We stripped the engine on Friday night and tried to repair it but on Saturday morning started leaking again. Engine is now out and ill decide tomorrow if ill just grout it or replace the block with a fresh one.

Very disapointing for all involved with the car.

As u said paul, last thing u want to do is bin it down the track with coolant on the back wheels @ 150mph.

Safety first :unsure:

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Swiper the Fox Grand Master

Swiper the Fox

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paul explained to me that the crack was repaired 5yrs ago...maybe from all of the strain the engine has undergone caused the crack to weep?

yeah have known about the crack for quite some time...has been pretty good up till now. Most 05U blocks will open up when subjected to this power level for a long period. All the bogged launches twisting and stressing the block would have done it no favours.

I grouted it this afternoon...no more weeping coolant. Was going to machine up another block but didn't want to crack a good one. Engine back in by the end of the week.

  • 2 weeks later...
  • 2 weeks later...
bigmikespec Veteran

bigmikespec

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Sorry to hear about the bad news Paul, hope you get it all sorted this time mate.

In your experience, for block strength is it ok to grout as far as the welsch plugs and still use the engine for circuit work? Any coolant issues?

BezerkR32 Veteran

BezerkR32

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i would not recommend it. bottom of the welsch pluds as a maximum. but run extra piston to bore clearance.

Sorry to hear about the bad news Paul, hope you get it all sorted this time mate.

In your experience, for block strength is it ok to grout as far as the welsch plugs and still use the engine for circuit work? Any coolant issues?

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