Anyone seen these
Discussion
Adrian W said:
What are those bosses for? the Lambda sensor is in the downpipe after the turbo
On the 2.5 GTO in the garage, they're both in the headers. On my 3R only one of them is in the header, (front one I think)?The more the merrier, one in each runner would be nice, easy enough to add in though.
Mike.
Depending upon the type of sender used I would never install permanently upstream of the turbo - I have seen the effect on the turbo blades when one of the senders breaks 
.
Much prefer it in the downpipe (oh er Mrs
) although accept that the reading will be lower than the manifold but unless you are tuning to EGT don't see a problem as probably not that accurate anyway.
Maybe it is for tuning and then you would remove it and replace the bung
.Much prefer it in the downpipe (oh er Mrs
) although accept that the reading will be lower than the manifold but unless you are tuning to EGT don't see a problem as probably not that accurate anyway.Maybe it is for tuning and then you would remove it and replace the bung
Mike Tuckwood said:
Adrian W said:
What are those bosses for? the Lambda sensor is in the downpipe after the turbo
On the 2.5 GTO in the garage, they're both in the headers. On my 3R only one of them is in the header, (front one I think)?The more the merrier, one in each runner would be nice, easy enough to add in though.
Mike.
Mike Tuckwood said:
I'll give them headers the once over, the guy who made them is only about 5 miles down the road from our workshop and is coming up to see us later in the week?
Mike.
I have been advised that they are made from 304 stainless, if so they will crack in time, they need to 321 material.Mike.
Remember these people do the Manifolds http://www.alunox.co.uk/manifolds.htm
Edited by Adrian W on Tuesday 23 February 09:01
Adrian W said:
Mike Tuckwood said:
I'll give them headers the once over, the guy who made them is only about 5 miles down the road from our workshop and is coming up to see us later in the week?
Mike.
I have been advised that they are made from 304 stainless, if so they will crack in time, they need to 321 material.Mike.
Remember these people do the Manifolds http://www.alunox.co.uk/manifolds.htm
Edited by Adrian W on Tuesday 23 February 09:01
If the standard manifolds lasted 4 years I'm sure these will last longer. Anything will crack given enough time and heat cycles.
mine have been cracked since I bought it... done 30k in the car with no real issues just a little hessitant. Got the manifolds on the bench now and the cracks are large enough to get feeler guages through and 2 inches long 
Got Adrians old M400 ones and have flexis in the exhaust which I beleive will be the only real solution to stop them cracking.
incidentally both my sensors are in the downpipes... same with the M400 ones i have so guessing most 3.0L are like this.
Got Adrians old M400 ones and have flexis in the exhaust which I beleive will be the only real solution to stop them cracking.
incidentally both my sensors are in the downpipes... same with the M400 ones i have so guessing most 3.0L are like this.
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