Castor
Trainee maniac
Please decode this....is this a good thing?
UPDATE: - found this - understand now..... https://books.google.co.uk/books?id...#v=onepage&q=v8 red grade '97 casting&f=false
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Littelwill
Well-Known Member
That looks great! When will fitting begin?
martynv8
Well-Known Member
Taking it to my mech next week to let him have a look. He's not entirely convinced with the use of the 4.0 pistons - it raises the compression from standard 4.6 pistons. Not so much a problem with LPG but could possibly be an issue with standard unleaded.
Couldn't see any daubs of paint inside the valley of the 1998 4.6 we had apart last weekend. Interesting document though. There was a mark for where they were top-hatted though, I believe. Cannot remember what the mark was now.
jacckk
Active Member
Look better when it's in & fitted.
The block is a red grade '97 casting so should be better quality than my '02 block. Top hat liners for 'hopefully' a pretty robust V8.
Where did you get the block/liners fitted from?
martynv8
Well-Known Member
I bought the lot from a guy who builds race cars - TVR's etc. It was for a project that never got off the ground. He had the work done at CME engine services in Bracknell.
Castor
Trainee maniac
They did a *beautiful* 3.6 jag engine for a friend of mine a few years back.
Castor
Trainee maniac
From what to what?
jacckk
Active Member
Cool. I just got a top hat liner block from V8developments a few weeks ago. It's back in the car now and working well.
martynv8
Well-Known Member
No idea what compression mine will currently be but the 4.0 pistons are supposed to raise compression by a point using standard composit gaskets.
martynv8
Well-Known Member
Good to hear. V8 Developments would have been my route if I hadn't found this one
Look better when it's in & fitted.
The block is a red grade '97 casting so should be better quality than my '02 block. Top hat liners for 'hopefully' a pretty robust V8.
Can I ask a stupid question, I thought that the Thor block was machined differently for different sensors etc. I only came across this as the casting number on my coffee table (a rover v8...) came back as "final revision for bosch engine management"
As you have a Gems block there to go back into your Bosch equipped car is this going to be a problem? Or are the blocks actually the same and no difference?
martynv8
Well-Known Member
Only difference i beleive is the knock sensor positions. Mine appears to have the gems already blanked off so should be good to go. My block is a HRC2411.
martynv8
Well-Known Member
I've just checked the table and its also HRC2411.
Well it'd be rude not to
Nice
I might be doing the same with my old block.
Nice
I might be doing the same with my old block.
Exhaust valves for the feet, little rubber pads for the glass to sit on top of the block. Painted gloss black and then the heads polished of with a polishing wheel. Much better than chrome paint and since its alooominum (as our american cousins would say...) it doesn't tarnish!
