Ariel.Club Forum

Hi.
Sorry to revive an old thread...
I'm also supercharging a opel speedster/vauxhall vx220
I'd like to ask if you can see any part numbers on the alternator (so that I could find out which GM engine it's from (i.e. 2.0,2.2 or 2.4))...

And is that idler pulley still for sale? :tu:

Thanks
Richard

I have an extra Idler Pulley. If you want it, it's yours.

Here is the idler pulley used.  Not sure about the belt question.  I cant find my old one
[img]http://bolus.shackspace.com/atom/IMG_0431.jpg[/img]

[quote="bolus"]
the belt is Napa #25-060505
[/quote]

Looking again into the belt layout:
Am I right that this Napa # is for a 6-ribbed belt with a length of 505mm?

So the Atom-LSJ uses the standard 6-rib LSJ crank pulley and a 6-rib SC pulley? How is that working with the L61 type spanner- and alternator pulleys? I thought that these parts worked with a 5-rib belt on the 2,2 ecotec's...

(Anybody of the Atom "turbo converters" have their redundant idler pulley for sale?? Or can send me some usefull pics of this? Thxs! )

[quote="bolus"]
the belt is Napa #25-060505
[/quote]

Or a 25-060512 on the lower HP Ecotec Atoms.

the belt is Napa #25-060505

This Opel speedster is not made anymore and now replaced with the "New Opel GT".
But the GT is based on the Solstice and the Sky. (Front motor and RWD.) Engined by the new 2.0 turbo 260HP LNF Ecotec.

Totally different animal than the Speedster, as that was manufactured in the Lotus factory besides the Exige & Elise:
Bonded aluminum chassis, fiberglass body and mid engine RWD.  ;D
They made a 2,2 NA Ecotec  and a turbo version but this one had an older Z20LET engine type with iron block. (But tunable to serious horsepower though. => http://www.youtube.com/watch?v=DFVa_eIuTAM  602HP :o )

I'd rather have that kool looking Opel speedster myself.  447hp@21lbs. of boost. I wonder how the engines hold up for track work?

I'd take a Solstice with Hahn's 447hp turbo kit
http://www.turbosystem.com/ProjectVehicles/New_Folder/SolsticeStage3pdf.htm

That Opel speedster is a very sharp looking car!!! It is a pity GM does not sell them here in the States.Instead,we have the Solstice and the Saturn version.I would rather the Opel :tu:  What fun it would be with the 2.4 turbo motor out of the Solstice!

it will be another week or two before I get my car back.  if the belt and pulley are not being used I'll send them to you

I have an Opel Speedster (AKA Vauxhall VX220), but is like an GM dressed Elise/Exige with a 2,2 Ecotec engine.
The problem with these is that this European (known as Z22SE) engine uses a different ECU than the US version and is not really tunable. Of course I can trow the SC onto it (SC kits are sold here with a decompression plate and piggyback solution), but I still need to upgrade the rods above 250HP. And for my 850kg car i like a bit higher revving engine. Short stroke is better... Like the LSJ has (+ stronger + oil squirters +...)

And I happen to have now a complete LSJ with ECU standing in my garage. So when I get HP tuners I'm in bussiness.
It will be a project, but you know all about that..  ;D
Not an Atom, but still a lot of fun:
[img width=800 height=533]http://autofoto.4muller.com/images/speedster2006ewa2af.jpg[/img]

[quote="bolus"]
If I remember correctly (its been 7 months since I disassembled the engine) that extra idler pulley is attached with a custom bracket where it looks like Brammo made it.  So it is probably a pretty custom setup.

I have not seen my completed turbo engine yet but if that pulley is not being used I would be willing to give it to you.  Though
shipping to europe would probably be crazy expensive
[/quote]

Well.. If you can find it, a picture will already be great.  :tu:
(Small post package to Europe is not that expensive. I just received an alternator + PCM from the US for around $30,- shipping.)

By the way, what engine are you replacing?  If it is a 2.2L ecotec, why not just throw on a supercharger (I have one for sale :) ) rather than replacing the whole engine. 

The close up from your spanner pulley reveal to me that the Atom uses a standard 2,2 ecotec spanner. And I think also the 2,2  alternator (turns clockwise, LSJ standard turns anticlockwise) Good info! 8)
The Normal LSJ has a very different spanner and a double sided belt layout:
[img]http://media.gm.com/us/powertrain/en/product_services/2007/Photo%20Library/Ecotec/LSJ/07%202.0L%20I4%20LSJ%20COB%20LoR.jpg[/img]