Vehicle & Technical > Series Land Rovers

is the block of a 2.25 petrol the same as a diesel??

(1/4) > >>

tjsj:
As in the question really! My friend has a series 2 lightweight 2 1/4 petrol and he destroyed the head of the engine, he wants to convert it to a 2 1/4 diesel but was wondering whether it may be worth just changing the head providing the blocks are the same? I'm sure some of you guys will know!!
Cheers

electricbluebadger:
Nope, diesels reinforced

cheers steve

Bowie:
The blocks aren't the same!

People will correct me if I am wrong, for sure (it has been known  :rolleyes:), but the Diesel has a steel crank, different cam, and a couple of other differences, not to mention different pistons, compression ratio..... the list goes on :)

If you tried to run with the cast iron crank you have in a petrol then it will crack pretty quickly given the increase in compression ratio, and the fact that a diesel is effectively 'knocking' every time it fires.

That is not a definiative list of differences btw, just an off the top of my head reason why not to do it ;)

That is... if I understood your question correctly ;)

HTH,

Bowie.

S188:
They are certainly very simular (the block that is), I'm not even sure if the block casting might actully be the same, though it could be machined slightly differently.  Diesels have been converted into petrols in the past by changing all but the bottem end.

As Bowie says though, vertully every component fitted into/onto the block, from bottem end, to head via cam are different. The bottem end of a diesel is much stronger with forged crank for example.  Petrolising a diesel would work fine with these HD components, it'd probubly never break (partly why the petrols are famous for lasting so well I think); turning a petrol into a diesel however would fail pritty quick if you didn't upgrade all these bits - It'd be easyer to get a decent diesel engine and just rebuild that, you probubly wouldn't need to do so much work to it.

I think the bottem ends of the later 2.3 diesels (5 bearing) shared more components with the petrols, as with the extra bearings, a cast crank became strong enough for the diesel so saving the expence of making forged ones.

fordlltwm:
The Block itself is the same as is the sump, but the crank, cam, pistons, con rod are all different, sorry

Navigation

[0] Message Index

[#] Next page