205 2.0l Turbo

[Arahan 4]

Id say that it was. I ran a Bosch recirc that had a normal dumping sound, switched to the Blitz and get chatter.

[ninjasid 0]

thats what I thought it was the chatter from the dump valve?

[lemmingzappa 75 1 Cars]

I guess it's possible, is the valve designed to emulate that sound or something ?

 

Never heard of that before.

[Daviewonder 533 3 Cars]

Been looking through the eBay ad, sounds like you've done a good job on the engine. What low comp pistons did you use for the rebuild mate, were they standard peugeot or uprated jobbies?

[hcmini1989 16]

Shame to see your selling after so much work ,You`ll regret it .Allso a shame your so far away i would love a turbo

[GLPoomobile 958]

Not that I'm any expert but.....although it does sound like compressor stall, the conditions don't seem right for it. What I mean is, all the times I've heard a car exhibit compressor stall it has been when coming off the throttle from much higher revs/load than that. I've never heard a turbo car (without dump valve) stall the compressor just from blipping the throttle like that. And obviously it shouldn't be doing that anyway with a dump valve fitted. The whole point of a dump valve is to release pressure and stop the compressor from stalling.

 

Seems more likely that the dump valve has been designed to mimic that sound, which is very clever if it's the case. Inevitable really as modern trends seem to be moving away from the old pffff-tsch sound of traditional dump valves, and more people now acknowledge that compressor stall sounds much cooler ( ) even though it's not a good thing.

[lemmingzappa 75 1 Cars]

I agree that's pretty kool if it's replicating the sound.

 

Although I have heard a couple of cars constantly flutter whilst sitting on low revs.

[24seven 104]

Save starting a new topic, is there any advantage in using the XU9 non turbo head & inlet manifold on the 2.0 turbo engine? I'm already thinking about engine options for this 309 because I can't stand this standard engine and since I won't get much for it selling it on if there are any bits that are worth taking off it then I might as well.

[Daviewonder 533 3 Cars]

Depends on what management you will be using as fitting an xu9 head would give you quite a high compression ratio and this would be too high if you plan on using the xu10 turbo management

[danpug 1]

The xu9 inlet is supposed to flow better and bolts straight on the 2.0t head but its a good idea to match the ports up as they are a differnet shape.

[welshpug 1,666]

have a look at Tom Fenton's build thread

 

basically a modern take of the Turbo Technics conversion.

[24seven 104]

Thanks guys. It's Tom's thread that got me thinking, if the standard 1.6 8v is good for that kind output with a turbo strapped to it, while the standard 8v turbo is around 150bhp, I though perhaps there was something different in the head of the non turbo engine that made the difference (but then there's a lot more to it than just strapping a turbo on!). Nothing set in stone yet, I still have an Mi16 in bits I need to decide what to do with yet!

Edited July 21, 2010 by 24seven

[danpug 1]

The 2.0t is only running around 0.5 bar boost standard whereas i think toms is 1.3 bar now, if i remember correctly. The turbo won't be running very efficiently at that boost level on a bigger engine though. Turbo the mi16!

Edited July 21, 2010 by danpug

[24seven 104]

Ahh, that explains it! I'd love to turbo the Mi, but I can't afford the management. Everything else I could probably work together though, fabrication and creative bodging I'm good at, though the exhaust manifold would be expensive too.

Edited July 21, 2010 by 24seven

[danpug 1]

Wracing could sort a manifold, management would be pretty expensive yes but well worth it.

[24seven 104]

Expensive is one of those words that gives me an instant headache. I'm a student and don't have any money, plus I keep getting turned down jobs. Any engine would be bought on my student loan instead of getting pished.

[danpug 1]

Fair enough!

[24seven 104]

if I do eventually find someone who'll pay me to work before settling on an engine, 16v turbo/sc is a definite possibility. Actually thinking about it an s/c is more likely, as I can see it being easier to build without having all the hassle of the manifold to deal with.

[danpug 1]

Yeah it probably would be, nice progressive power as well.

[welshpug 1,666]

Could do what Henry Yorke did and bolt the XU10 turbo+exhaust manifold to an XU9, with all the management etc.

 

His was a Low comp 1.9 though, but if you get your mapped and keep the boost at a respectable level I can't imagine there being too many problems, it's only 9.2-1 as standard IIRC, though I'm not sure what the low comp or turbo engines run.

[24seven 104]

Hmm, there's a thought. That should make it easier to keep the PAS & A/C, not that the latter works...

[welshpug 1,666]

it has a/c?!

[24seven 104]

Yup. factory fitted, it's all there and as far as I'm aware it's got no leaks either, it just needs regassing.

[Henry Yorke 269 3 Cars]

Could do what Henry Yorke did and bolt the XU10 turbo+exhaust manifold to an XU9, with all the management etc.

 

His was a Low comp 1.9 though, but if you get your mapped and keep the boost at a respectable level I can't imagine there being too many problems, it's only 9.2-1 as standard IIRC, though I'm not sure what the low comp or turbo engines run.

About 8.1:1 CR. Whack the turbo on at the standard 0.5 bar and get 164 bhp with a cat on on standard 2.0T management.

 

Back to the original post, I like the inlet as mine runs over the top of the alternator on the 50mm inlet. It does sound like compressor stall as mine sounds like that if I disconnect the dumpvalve.

[24seven 104]

That's sounding more and more promising the more I think about it. I may well turbo this standard engine then. cheers folks, sorry for the hijack.