Possible?

Hello,

I'm sure I've asked this before, but I can't remember the outcome or find the topic. Is it at all possible to fit a 200TDi or a 300TDi head to an N/A block? The reason I ask purely being down to curiosity. Would the bolt holes, oil holes and water jacket holes all line up?

-Pos

well,as far as i know the blocks are an almost identical casting.

Why would you want to?

boydy1989 said:

well,as far as i know the blocks are an almost identical casting.

Why would you want to?

Click to expand...

The reason being this. I could get myself a 200tdi head and rebuild it for no more than £80. Then I'd have a few options:- Turbocharging:
Because I'd still be using my original block and pistons etc, the compression ratio would still be high enough to rake in any extra power provided by the direct injection regardless of having a turbo or not. Of course, I could add a turbo and the newer bosch injection pump and rake all the benefits of a 200tdi for a fraction of the cost and without having to remove the block. It's just an idea and I'd be happy to go with it but I'm convinced it's not as straight forwards as swapping the head. Are the push rods different lengths? I've also been told that the head bolt holes are a different size thread?

-Pos

Don't waste your time ffs. If you want a tdi go and buy one they're dirt cheap now.

well, u'd have to buy injectors, the bosch pump, pipes, etc etc.

Your pistons are different to TDi pistons, they are not as tough and have a V machined into the head to line up with the precombustion chamber outlet.

you said it yourself earlier i think, arn't the later TD and also TDi blocks re inforced to cope with the T part?

You would need to get an intercooler in there too really.

I can assure you, a TDi without the T is really slow - my wastegate stuck open, they are worse than the NA. Just putting the head on it won't give you any power increase, and will be a lot of work and money once you've bought all the parts. Just fit a TDi...

Fair enough. I was more interested in the concept than anything. The reason for me not wanting to fit a TDi is the difference that it makes to my insurance, where as if I just changed the head it wouldn't be as big a swap if you know what I mean. I'll get in touch with the NFU and see what they say it'll cost me to drop one in. if it's pence I'll just buy one and do it!

-Pos

ere pos

footmanjames insured both me an my mate with TDi's in our B reg 90's at the SAME PRICE if they were stock.

This year i paid my renewal of £355, all mods declared, i.e. engine, brakes, wheels, K&N, spots, steering wheel, etc etc.

I told them it was a standard land rover fit engine, just from a later land rover, which is completely true, and they were fine with it.

boydy1989 said:

ere pos

footmanjames insured both me an my mate with TDi's in our B reg 90's at the SAME PRICE if they were stock.

This year i paid my renewal of £355, all mods declared, i.e. engine, brakes, wheels, K&N, spots, steering wheel, etc etc.

I told them it was a standard land rover fit engine, just from a later land rover, which is completely true, and they were fine with it.

Click to expand...

Alright well i'll get onto them about that & I'll also get a quote from footman James just to see what they're like.

dnt bother with their website though give them a ring.

pos said:

Hello,

I'm sure I've asked this before, but I can't remember the outcome or find the topic. Is it at all possible to fit a 200TDi or a 300TDi head to an N/A block? The reason I ask purely being down to curiosity. Would the bolt holes, oil holes and water jacket holes all line up?

-Pos

Click to expand...

Possible, but it will blow up.

I estimate the compression ratio wold be at least FIFTY to one, and maye twice that, and IF the starter motor could turn it over (I think not) and IF it fired up, I reckon you would be able to examine the conrods sticking out of the side of the block inside a minute.

Neither the new head nor the old pistons have a "combustion chamber", and without that there's no space to compress the air into - or very little.

I reckon you should do it, and post a video of what happens.

CharlesY

ooo ihadn't though of that. I'd like to see it too

What kinda profile are TDi pistons Uncle Charlsey?

boydy1989 said:

ooo ihadn't though of that. I'd like to see it too

What kinda profile are TDi pistons Uncle Charlsey?

Click to expand...

Almost all direct injection engines have the COMBUSTION CHAMBER moulded and / or machined like a quite deep hollow into the top of the PISTONS. This means the underside of the cylinder head can be more or less flat which is easy to make. Some Landy engines with DI pistons like this also have a steel spigot set in the middle of the combustion chamber. After a few minutes of running this gets bloody hot and helps to vaporise the fuel spray from the injectors, which is good for power, economy and clean exhaust.

CharlesY




I tried to paste in a photo but it didn't like it.