41 replies to this topic

[Steve Crisp]

Those Wiseco 8.8:1 forged pistons are calling me! Steve

[dude]

you´ll need a big sledgehammer to get them fitted in a z22se-engine i´ll check if the pistons from saab 9-3 fits in the 2.2 with std-crank and rods. then i maybe can get my hands on a couple of sets.

[Steve Crisp]

Hi Anders, Yes, I was puzzled why they said for a 2.4, when in his write-up for tuning the 2.2 he mentions fitting them. I assumed from that, that he could also get 8.8:1 pistons for the 2.2. I was going to mail him and ask... The Saab pistons sound a good bet, but isn't the Saab turbo a 2.2 engine reduced to 2.0? Steve

[dude]

it´s the stroke that´s different. same bore. the pistons you looked at is for the older 8-valve 2,2 engine. pre 2002.

[Steve Crisp]

Hi Anders, A reduced stroke means a longer conrod to get it to the top of the bore, doesn't it? Or if the conrods the same, then the crown height of the piston would need to be higher. As you sure the piston will give the right compression ratio in our 2.2 engine? Steve

[speedyK]

What about asking Courtenay if they could source and supply upgraded rods and pistons as an optional, additional cost upgrade to the Delta-Motor supercharger kit they have? If they would consider that, there might be a few who would go for it – I for one would be interested. Anyone already talked to them? (There is one guy with Courtenay upgraded brakes who already has a supercharger – don't think he's responded yet to requests to tell us more.)

[dude]

Hi Anders,

A reduced stroke means a longer conrod to get it to the top of the bore, doesn't it? Or if the conrods the same, then the crown height of the piston would need to be higher. As you sure the piston will give the right compression ratio in our 2.2 engine?


Steve

i shall compare the compheight and rodlenghts hopefully this week.
then we will know.

//anders

[Steve Crisp]

Hi Speedy, I agree it would be nice for Courtney to source some rods and pistons. My main motive on doing my own shopping currently, is that the dollar/pound exchange rate makes buying from the States very(ish) cheap. They've also had a lot more experience of this engine. I take you point that a few more people would go for this with sourced rods and pistons. For the sake of £500 I'd like to get the internals ready for anything I might demand of it in the future. I'm not fully comfortable with the gasket thing, and the forged rods are so cheap (£200), especially at it is the known "weakest link"! Steve Steve

[speedyK]

For the sake of £500 I'd like to get the internals ready for anything I might demand of it in the future. I'm not fully comfortable with the gasket thing, and the forged rods are so cheap (£200), especially at it is the known "weakest link"!

My sentiments exactly.

It is just seems a little complicated for a layperson to be sure that they are really ordering tthe right bits. And then, judging by some of the US firms, you have no choice but to give them the money and wait... and wait... and hope... and wait...

If anyone is brave enough to try to sort this themselves and actually finds a prompt and reliable supplier of good quality rods and pistons, gets them fitted without difficulty and can say that all is OK, then there will be a some grateful fellow VXers keen to order too. Afraid I'm too ignorant and unsure to be the pioneer...

[Steve Crisp]

We'll see how soon my rods come, but if I have no problems then Eagle say that Dynoflo are their biggest user so I guess they have a good reputation. It therefore becomes a repeatable deal. We then just need the same for pistons... Steve

[bernieb]

Anyone know if you have to replace the con rod bearings if you fit new (forged) rods, or can you reuse the exisiting ones ? Also, is it possible to fit new rods / pistons with the engine in situ ? Thanks, Bernie (Hopefully soon to be Speedster owner with supercharger plans...)

[dude]

Anyone know if you have to replace the con rod bearings if you fit new (forged) rods, or can you reuse the exisiting ones ?

Also, is it possible to fit new rods / pistons with the engine in situ ?

Thanks,

Bernie
(Hopefully soon to be Speedster owner with supercharger plans...)

never use the bearings twice. the cost for a new set is under 100€.

you can change pistons/rods without taking out the engine.
you have to remove oilpan and cylinderhead.

//anders

[paulb]

Many modern engines seem to have big end bolts changed when going for higher outputs (K, Duratec). Is anyone considering this to go with forged rods? Thanks Paul

[bernieb]

From what I've seen on several US websites, new forged rods are shipped with new con rods bolts. e.g.

http://www.rksport.c...104&view=detail


Will standard ecotec rod bearings be up to the job in a supercharged engine (250hp max), or do you need something stronger (Clevite) ?

Thanks,

Bernie

[dude]

stock bearings will last way beyond the poweroutput we´re talking about. a quality-oil is more important.

[Ricky2772]

that's from [gulp] mantapart:

Billet Competition Connecting Rods: This set of 4 high quality steel billet rods are precision CNC-machined for ultimate strength and lightness, with maximum reliability in high HP and RPM applications. Complete with high tensile strength ARP rod bolts and high quality wrist pin bushings, these are vital to any high HP ECOTEC- the factory powdered metal rods cannot sustain high HP reliability for long! Come complete with the best Clevite 77 rod bearings too- specify your crank size.


...prolly too good to be true, right Anders?!?

[Steve Crisp]

Hi, Well, they've arrived!!! Superb they look too. I'll do some piccies when my camera has charged up. So the bottom-line is that they are Eagle con rods made in forged steel, etc. The part number is CRS5765C3D, and I go them from www.dynoflo.com for $300 plus $35 shipping, and then the customs charged me £46.66 ontop. This all comes to about £210 for a luvverly set of shiny conrods! It's time to order the Wiseco forged pistons, now that these have made it. Steve

[clipping_point]

Great! Sadly the uploading doesn´t work right now, so charging the camera wont help

Edited by clipping_point, 12 March 2004 - 10:30 AM.

[dude]

i´ve been doing some comparison between the c20xe and z22se and found out that the rods and pistons are compatible. just ordered a set of lowcomp-pistons and rods to my supercharged c20xe engine. for 600€ //anders

[paulb]

They are the same even if the stroke is different between the 2.0 and 2.2?