OM-ARC wrote:Seriously... reach out to Jay. He knows his stuff and is working with some Cosworth owners and their troubles... You can find him here and in miata.net as blackone....
Ha!!! I found him.
Thanks,
Fred
OM-ARC wrote:Seriously... reach out to Jay. He knows his stuff and is working with some Cosworth owners and their troubles... You can find him here and in miata.net as blackone....
Here's Jay's member info:fredmuggs wrote:Hi ON-ARC"OM-ARC wrote:Seriously... reach out to Jay. He knows his stuff and is working with some Cosworth owners and their troubles... You can find him here and in miata.net as blackone....
I must be in the wrong fourm or something over at miata.net. Couldn't find a "Jay" or "blackone."
Just before I email the Moderator over there, do you have any additional contact info for Jay?
Thanks,
Fred
jboemler wrote:By "pressure gauge", do you mean the same fixture that's used for leak-down testing? I somehow doubt that's a valid test, since it's intended to measure something that's almost fully sealed, using very small flow numbers. With the rest of the exhaust very open by comparison, the flow required for any meaningful value would have to be much larger than the leak-down fixture can provide. I also wonder how much the potentially open valves in the head would distort the readings.
Basically, I'm just not sure your 2-pound number means anything at all, but willing to be convinced.
Sorry, jay928, my response of a few days back apparently went somewhere else.Ted928 wrote:I went back and looked at your original post where it says you have an automatic tranny. Maybe that is not able to transmit all the new torque. Since the engine has boost and rich fuel, the engine must be making high power.
i am just guessing as I am not experienced in SC or automatic trannys.
Keep us informed.
At this point, I'm actually hoping to find a bad cat and an easy fix. There's still some "exotic" gremlins left to chase around: "bad" cams or cam timing from some rebuild before I got the car, bad head, trans control communicating with the ECUu, ya-da, ya-da .... I really don't want to mess with those.jboemler wrote:It'll be interesting to see what they come back with. My recollection is that you can see the first converter from the bottom, without removing the header. Not sure that you could see THROUGH it enough to truly inspect it, but I doubt you'll be able to see it at all from the top. You may find that you don't get any benefit from removing it, but hopefully others will jump in on that score.
BTW, in talking about the shop's measurements, I didn't mean to imply that there was an undiagnosed blockage in your system -- I have no indication one way or the other.
Hey!!!jboemler wrote:Here's Jay's member info:fredmuggs wrote:Hi ON-ARC"OM-ARC wrote:Seriously... reach out to Jay. He knows his stuff and is working with some Cosworth owners and their troubles... You can find him here and in miata.net as blackone....
I must be in the wrong fourm or something over at miata.net. Couldn't find a "Jay" or "blackone."
Just before I email the Moderator over there, do you have any additional contact info for Jay?
Thanks,
Fred
http://forum.miata.net/vb/member.php?u=25738
Brian wrote:Indeed, bypass or some other mechanic source or leak is resulting in the air not reaching the cylinders.....it's the only reasonable explanation. Bypass is the most likely source.
Either that or the converter is stuffed/melted resulting in no flow...I think you mentioned a joy ride in the car BEFORE doing the tune? It would not take much of a joy ride without the tune being loaded to melt down the cat (except this should result in really HIGH boost readings and since you are not getting that, I am back to my first sentence above as the logical source).
TED928:Ted928 wrote:I went back and looked at your original post where it says you have an automatic tranny. Maybe that is not able to transmit all the new torque. Since the engine has boost and rich fuel, the engine must be making high power.
i am just guessing as I am not experienced in SC or automatic trannys.
Keep us informed.
Hi, Brian:Brian wrote:Sounds like option number two that I suggested above was the answer afterall....Brian wrote:Indeed, bypass or some other mechanic source or leak is resulting in the air not reaching the cylinders.....it's the only reasonable explanation. Bypass is the most likely source.
Either that or the converter is stuffed/melted resulting in no flow...I think you mentioned a joy ride in the car BEFORE doing the tune? It would not take much of a joy ride without the tune being loaded to melt down the cat (except this should result in really HIGH boost readings and since you are not getting that, I am back to my first sentence above as the logical source).