Come Over From The 309 Forum Looking For Help With A Turbo Conversion

[thebenny 0]

Hi guys. A quick story.....I sold my car and it came back to me with a blown engine and 4 lads who wanted they're money back. Instead of taking a kicking I handed the money back over as I didn't think it would be as bad as it was but it was. Anyway, the engine was removed and I sourced a new one ( a 2l turbo). The engine went in okay but then I came up against the wiring loom issues which got sorted by pug1off and now I'm here!

 

So finally got my wiring loom sorted out, and now i found another problem. As i now have the wiring loom made for the car I'm now stuck to this engine....

 

It's a 406 sri 8v turbo 150 bhp petrol engine. The problem is the turbo manifold is rubbish and only fits the original turbo, which seems pretty pointless spending time and effort swapping engines from a 135 bhp to a 150 bhp engine. I need to know what to do. I've been told to custom build a manifold at £700 and been told by pug1off that by adding a t28 turbo, a better manifold and management, I'll be seeing 300bhp.

 

Here's a few pics of my problems :-

 

 

As you can see the standard turbos won't fit the manifold and even if I get a plate made to make it fit the manifold it is still so restrictive.

 

The piping is a relocator to put the turbo above the gearbox, but with the escort cosworth turbo that i have the lag would be horrendous and add that to the manifold!!

 

I've spoken to turbo technics, they couldnt help. Spoke to owen developments and they couldn't help but put me onto nortech performance who want £700 to build me a tubular manifold to release the power!

 

So what have other people done to fit better turbos to this engine? Or what have you done to improve the original. pug1off reckon 200 bhp is the most you can get out of the t22 original turbo. Maybe change the actuator and you'll get more bhp but at a risk of major overheating issues?

 

I'm stuck!

[welshpug 1,626]

I believe miles got 220 out of one of these on omex with about a bar of boost.

 

if you want ore you really are talking lots of money, in which case you might as well put a 16v head in the mix and do it properly

[Tom Fenton 1,526]

The standard turbo and manifold is better than you are giving it credit for. If I were you I would fit it all as it is, with a mappable ECU to run more than the standard 10psi of boost (the 406 ECU will throw a wobbler at much above this).

 

Do this and you should be approaching 200bhp, at that power you will need to be spending your cash on the rest of the car to handle it anyway, suspension, brakes, LSD, etc.

[Henry Yorke 269 3 Cars]

+1 to what Tom said. There is no point putting a bigger turbo on without changing the management really. Yes you can "chip" them up a bit to get some more power, but the turbo design is never going to give you a massive whack in the back as it pulls off as it is designed for a wide torque range

[Miles 331 1 Cars]

From the little I had with the std Turbo you could get more than 220 with a few little mods so no more than 200bhp is more likely to get you spending money on something you do not need, the thing I found about it was the power delivery being horrid compared to a older TT conversion's but as with everything depending on your budget this can be overcome