Buying an S2 Coupe - Am I walking into a world of pain.

[Ian Simmonds]

No pipe attaches there, but my god, what is going on with that wastegate!!!!

For reference this is what ours looks like…



And I suspect most S2’s do. OE there wouldn’t have been a hole in the top.

[B5NUT]

O god now what

So I take it that nut/bolt should not be there.. bodge it a scarper....

Anyone got a wastegate for sale

[Ian Simmonds]

I’d have a quick look inside first to see if there’s even a spring. There was a (horror) photo on here about a year ago of someone (apologies, can’t remember whom) who found no spring and something like a 24mm socket holding the wastegate shut.

[B5NUT]

If I take the cap off is it easy to put back together?

[Ian Simmonds]

It’s quite straight forward, just the 6 nuts. Couple of caveats. If the spring is still in there it’ll be forcing the cap up, so can ‘ping’ the last bolt off. I undo all six half way, then 5 off so you’re only managing one whilst pushing down on the cap to prevent it from going ‘boing’ and losing the nut.
Similarly, putting an old towel or similar around it saves heartache if you do drop a nut.
Refitting is the same really, cap on, compress spring with cap and get first bolt on, then work it down progressively from there.

Hopefully you’ve got a spring.

Also, have a quick S2Forum ‘search’ for wastegate. There’ll be plenty of tips and tricks or indeed interesting horror stories.

[B5NUT]

removed the 6 nuts and the cap is stuck fast will not come off.

[Bowie69]

Undone the big one in the middle?

[Ian Simmonds]

Just found this…

https://www.s2forum.com/forum/techni...ate#post215138

last post suggests it’s something a ‘period’ tuner might have done.

I’ve not seen it before TBH, so wouldn’t suggest undoing it (the big one) in case it changes the boost setting.

Normally it’s just the 6 nuts that release it.

[martinjs]

Yeah you have been Superchipped alright

[Ian Simmonds]

You probably need a Newsh or similar who may well have seen such shenanigans.

[martinjs]

That’s what Superchips did back in the day, they unplug the wgfv and wind the wastegate spring perch right in via that bolt.

[B5NUT]

It's off..

This is what I found. It's looks like the modification allows you to put more pressure on the spring keeping the gate shut.


waste1.jpg
waste2.jpg
waste3.jpg
waste4.jpg

[Ian Simmonds]

That’s what Superchips did back in the day, they unplug the wgfv and wind the wastegate spring perch right in via that bolt.

That’s a bit Neanderthal isn’t it?

[martinjs]

Yes it’s a total bodge, I’ve not seen it for a long time as most have been ‘un-superchipped’ already

[Bowie69]

It was the 90s, people outside of OEMs hadn't really worked out what EFI was by this point, so preferred to muck about with the mechanicals.

That and standalone EFI for road cars was completely in its infancy, and was horrid.