FAO MartinH, Garage19 etc, Wastegate position

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Oct 25, 2008 | 01:16 PM

Chip

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FAO MartinH, Garage19 etc, Wastegate position

While finding my thread from XMAS about my nova, I noticed again that you two had been discussing the wastegate take off.

Quote:

Originally Posted by martin-reyland

Just an observation chip but have you tried the wastegate in that position before? It looks like the gases would be happier going round the turbo rather than out the wastegate when needed.

Looks like it will be fun when done

Quote:

Originally Posted by Garage19

That photo doesn't show a very good picture of the wastegate angle.

As you know, the problem with waste gate exit is to get it to flow well in both directions with out one impeding the other too much.

Toughest test will be when Chip is running 0.7bar to run in.

I have done a quick MS paint drawing to better show the actual angle/take off from above.

Just a quick note to say that now ive finished with running it in, I can confirm that it holds the 0.7 bar spring pressure perfectly right up to the rev limiter without any fluctuations at all.

So a big thankyou once again to Doug for making it

Oct 25, 2008 | 01:31 PM

Garage19

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From: Nr Ipswich

Great news.

So are you giving it some stick now?

Time to swap over to the other ECU?

Oct 25, 2008 | 01:38 PM

leecavturbo

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chip is that what the issue was with it that MH and G19 had?
as i would never of said control would be a problem i would have said that
at that angle your restricting flow a little thats all

Oct 25, 2008 | 01:51 PM

Garage19

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From: Nr Ipswich

Thats the problem with siting wastegates. Its always a balancing act between ultimate flow and controling boost.

Oct 25, 2008 | 01:53 PM

Chip

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Quote:

Originally Posted by Garage19

Great news.

So are you giving it some stick now?

Time to swap over to the other ECU?

Ive not run it on more than 0.7 bar yet, but have driven it hard at that level.

Just need to get an MOT on it, then swap onto the autronic, and im ready to start mapping it up for a decent amount of boost at last, although Ive still got a couple of changes to the suspension I want to make first to make it stronger.