2 Litre Pinto Tuning ?

[TSM Locost]

Burton Power
SOHC Pinto Engines

All engines produced after 01/89 are suitable for use with unleaded fuel. For all other engines, an identification mark (adjacent to No 4 spark plug) must be present to designate suitability for unleaded. These are:
* 1.6 - M, MM or N, NN
* 1.8 - S, SS
* 2.0 - P, PP or R, RR



I would have thought that all injection would be converted from new, looks like i am wrong, Bugger.

[Bonzo]

Hi Mike

Yes, those were the kind of marks I was expecting to find.

Went to my local engine re builders yesterday to find out some general machining prices.
One of the lads thought the injection heads would all be unleaded & the other one said he wasn't so sure of that
Pity their father wasn't there as he is old school enough to remember the Pinto engine.

I guess if I can't find out for definite, then the conversion route it will have to be.
Don't want to be putting some shiny new gear in the bottom end just to drop a valve after a few thousand miles

[twinturbo]

20 is a standard 2.0 block
205 is an injection block.
200 is a cosworth 4x4 block
204 is a thick wall block (transit I belive)

TT

[Bonzo]

Cheers for the info Rob

I might be able to cross reference the con-rod part numbers when I turn the block over & pull the pistons, I believe the injection engine had slightly stronger rods.

To be honest, so far the only semi-serious wear I have found is on the big end shells, slightly scuffed & the big end crank journals showing minor wear accordingly.

If it was only for a run about, I would simply treat the bottom end to a new set of rings, new mains, new big ends & light hone.
Run the head as is because there is nothing wrong in that department that a quick re-lap of the valves wouldn't cure.

The master plan at the moment is to have the block bored out to 93mm ( 2.1 conversion )
Full crank re-grind & fit HD bearings.
Convert the head to unleaded ( If needed )
Fit a full Kent FR32 fast road cam.
Source more suitable exhaust manifold.

As for fuelling, see how the Webber twin choke performs first then go from there.

Will it all be worth it !!?? Probably not but that's the way Junior is set on going & if I am honest, just about as much work as I can handle at this moment of time

On the subject of the 2.1 conversion, has anyone heard of TOTO pistons ??

I can get a set of TOTO pistons for about £80 cheaper than AE ones.
Just don't want to buy a pile of crap just to save a few pounds.

Thanks for your input guys

[robo]

Dont worry to much about the toto pistons ronnie they are just a cheap piston from a large jap piston maker. All this stuff is made to a spec and is probably no different to the hepolite pistons we are used to.

Bob

[Bonzo]

Cheers bob

I spoke to our local engine builder yesterday, dad wasn't there but the lads said more or less the same.

They are quite happy to do the oversize re-bore but asked if I could supply the pistons as the last time they done a 2.1 conversion, they had trouble obtaining them.
Should probably explain, they are a very small company but have been going ever since I was a teenager.
As usual & like me, being in the ass end of nowhere I guess they are limited to a small handful of suppliers.

The TOTO pistons ( 2.25mm oversize ) Are £120 for the set inclusive of rings & gudgeon pins.

The AE pistons are £220 per set, again inclusive of rings & pins.

the price difference of £100 is almost enough to pay for the re-bore cost ( I incorrectly stated £80 earlier )

[baz-r]

what about wossner pistons? i think thay do hi comp pistons 2mm oversize
no idea of price