**Coming soon** New Z20LET / Z20LEH & Z16LEH pistons manufactured by Cosworth

[Dave GSiT]

Within the next 2 weeks, Cosworth will have completed their first batch of Z16LEH pistons for the new Corsa VXR and also their forged pistons for the Z20LEH and Z20LET. Pics and details will be posted here fist.

[GaryB]

Do you have a price for the Z20LEH pistons and will you sell a batch of 6 rather than multiples of 4?

[Dave GSiT]

Do you have a price for the Z20LEH pistons and will you sell a batch of 6 rather than multiples of 4?

You mean 6 pistons right rather then 4 pistons? (As opposed to complete sets). Im sure something could be accomodated yes.

[Matthew H]

how much are the 1.6 pistons?

[Dave GSiT]

Cosworth pistons £552.54 to Mig member (set of 4 with rings etc).

[GaryB]

Cosworth pistons £552.54 to Mig member (set of 4 with rings etc).

and for 6?
VAT included?

[Matthew H]

do you do rods?

[Dave GSiT]

and for 6?
VAT included?

£828.82 Inc vat and postage.

do you do rods?

Yes, we do a multitude of other parts. Performance Engine Components :: PEC

[Dave GSiT]

Z20LET / Z20LEH pistons now in stock. details here :

Cosworth Z20LET and Z20LEH pistons now in stock

[Jimbob Gsi 3.0]

Do you have a price for the Z20LEH pistons and will you sell a batch of 6 rather than multiples of 4?

You mean 6 pistons right rather then 4 pistons? (As opposed to complete sets). Im sure something could be accomodated yes.

This what I would like to know.

I`m after some low comp pistons 86mm in diameter for an X30XE, which has a stroke of 85mm.
Wonder if these would fit??

[GaryB]

I`m after some low comp pistons 86mm in diameter for an X30XE,

I'm considering using z20leh's for an x30xe. It is a choice whether to use these or stock pistons or these - I don't want to go below 9.0:1 and I'll be using a MLS gasket, stock z20lehs on x30xe are about 9.2:1, I note on that for z20leh engines these are specced at 8:5:1 as against stock 8.8:1.

Amongst others, Wossners* also do low comps for this engine.

*I'll only mention Wossners in this thread as they are also sold by DaveGSIT/ PEC

[Jimbob Gsi 3.0]

I'm considering using z20leh's for an x30xe. It is a choice whether to use these or stock pistons or these - I don't want to go below 9.0:1 and I'll be using a MLS gasket, stock z20lehs on x30xe are about 9.2:1, I note on that for z20leh engines these are specced at 8:5:1 as against stock 8.8:1.

Amongst others, Wossners* also do low comps for this engine.

*I'll only mention Wossners in this thread as they are also sold by DaveGSIT/ PEC

Cool well I wanna get to around 8-8.5:1 if possible as I`m going Charged, and wanna do it properly. I`ve been told I can use standard rods too, so hopefully the pistons alone will do the job.

[GaryB]

Cool well I wanna get to around 8-8.5:1 if possible as I`m going Charged, and wanna do it properly. I`ve been told I can use standard rods too, so hopefully the pistons alone will do the job.

I'm building a supercharged application as well, TBH uprated rods & ARP's were the first thing on the shopping list. Depending on power, add steel crank and maybe girdle too.

I only know of one typeof pistons for the x30xe that'll get you close to 8.0:1 C/R but given it's DaveGSIs trade post it would be a bit unfair to mention them. ( Search my recent posts or look at my LET turbo spec...)

[Dave GSiT]

With referance to the V6 engines, its something we have looked into and it is possible. If anyone has any details from their OE engines (we need : comp height, head CC', gasket thickness, small end dia) then we should be able to make semi-educated guesses as to the suitable.

[Jimbob Gsi 3.0]

X30XE.
Cylinder diameter, 86.0mm
Course of the piston, 85.0mm Stroke

Have been told that the C20LET will fit,
C20LET
Piston Diameter (standard).......85,925/85,965mm (in 5 grades)
Piston Oversizes.................0,5mm
Piston Clearance in bore.........0,05/0,07mm
Piston Rings - number............2 compression 1 oil
Piston Rings - Width.............(1)(2) 1,5mm (3)3,0
Piston Rings - Groove Clearance..
Piston Rings - Gap in Bore.......(1)(2) 0,30/0,50mm (3) 0,40/1,40
Oil Pressure bar (PSI)...........1,5(22) at idle
Gudgeon pin diameter.............21mm
Gudgeon pin fit in piston........Clearance 0,004/0,010mm
Gudgeon pin fit in con rod.......Clearance 0,015/0,030mm
Connecting Rod length............
Crankpin Diameter................48,970/48,988mm
Crankpin Undersizes..............0,25;0,50mm

Will see what I can find dimension wise for you.

[GaryB]

Jimbo, do you know anyone who has actually used c20let pistons in an x30xe engine?
All those I know that have built low comp x30xe's & tried with those pistons have said the valve cutouts are in the wrong place hence the need for Z20LEHs etc.

[Dave GSiT]

X30XE.
Cylinder diameter, 86.0mm
Course of the piston, 85.0mm Stroke

Have been told that the C20LET will fit,
C20LET
Piston Diameter (standard).......85,925/85,965mm (in 5 grades)
Piston Oversizes.................0,5mm
Piston Clearance in bore.........0,05/0,07mm
Piston Rings - number............2 compression 1 oil
Piston Rings - Width.............(1)(2) 1,5mm (3)3,0
Piston Rings - Groove Clearance..
Piston Rings - Gap in Bore.......(1)(2) 0,30/0,50mm (3) 0,40/1,40
Oil Pressure bar (PSI)...........1,5(22) at idle
Gudgeon pin diameter.............21mm
Gudgeon pin fit in piston........Clearance 0,004/0,010mm
Gudgeon pin fit in con rod.......Clearance 0,015/0,030mm
Connecting Rod length............
Crankpin Diameter................48,970/48,988mm
Crankpin Undersizes..............0,25;0,50mm

Will see what I can find dimension wise for you.

Thats a good start based on this its possible some C20 or Z20 pistons could suit.

[Jimbob Gsi 3.0]

Thats a good start based on this its possible some C20 or Z20 pistons could suit.

Have been told C20LET pistons and rods will fit straight on without issue, but without taking her apart to measure the criticals I dunno. Will have to pull my finger out!!

[Dave GSiT]

Have been told C20LET pistons and rods will fit straight on without issue, but without taking her apart to measure the criticals I dunno. Will have to pull my finger out!!

See, hearing and knowing are very different, We havent even got to valve angle and lift in relation to the cutouts on the pistons yet.

[Jimbob Gsi 3.0]

See, hearing and knowing are very different, We havent even got to valve angle and lift in relation to the cutouts on the pistons yet.

Apart from sending you a stripped engine for you to use, what exactly do you need, and I`ll see what I can dig out, or measure??

[Dave GSiT]

Apart from sending you a stripped engine for you to use, what exactly do you need, and I`ll see what I can dig out, or measure??

Cylinder head would do.

[Jimbob Gsi 3.0]

Cylinder head would do.

I can send you a cylinder head if you need one??
Pm me if your interested and I`ll see what can be done.
Also could send you a piston so you could measure little end and big ends then??

[Dave GSiT]

If your serious let me know, I can give you our address to send some bits down but I'll be honest, we are snowed under at the moment and it might not happen for a couple of weeks....