Is this a race cover S480 ?
This says its a race cover, same part number on the compressor
http://www.theboostlab.com/store/pro...ce-Cover).html
http://www.theboostlab.com/store/pro...ce-Cover).html
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Mine doesn't have a race cover(76mm)but look how the surge ports have been machined. They are more than double the size than the OP's pic. I also think there are many different versions of race covers. I find it hard to believe this years race cover is the same as 2 years ago.
Just to throw this out there...
Why do larger surge ports make it a race cover? Why would larger surge ports aid in performance? I was under the impression air wasn't being "sucked in" the surge port area in boost. Thought the scroll itself was larger in the "race covers", no?
Why do larger surge ports make it a race cover? Why would larger surge ports aid in performance? I was under the impression air wasn't being "sucked in" the surge port area in boost. Thought the scroll itself was larger in the "race covers", no?
The race cover has a velocity stack machined into the cover to allow a wider range of air being pulled in. The "straight cut" housing is standard. If they say that version is a race cover then I would question it.
If that's the case couldn't I just tack weld a velocity stack on my "non-race" inlet? (center portion only) And have a "race cover" ?
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OP yes That is a race cover.
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the Borg Warner Symbol cast into the cover up there by the outlet... The RC has about a 1/4 inch bigger overall diameter than a standard cover. Different part number cast onto the housing. If the cover is as delivered from Borg Warner it will have an inlet bell in the opening.... but the good shops that know that turbo remove it... The turbo flows more air without it.
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No. The 3 inch slip fit outlet and the differences in the inlet are the 2 most minor differences between the covers. What your proposing would more than likely hurt the performance of your turbo. There are differences inside the covers that you cant see that makes the race cover better than the standard one.
You are correct, it's a Bullseye cover, however through all my research looking to buy, all the "race cover" turbos has a cover that looks pretty close to mine. I'm sure there's more technical differences but this is from my research.
No. The 3 inch slip fit outlet and the differences in the inlet are the 2 most minor differences between the covers. What your proposing would more than likely hurt the performance of your turbo. There are differences inside the covers that you cant see that makes the race cover better than the standard one.
When I was sent my turbo it had a non-race cover on it (I ordered it with a race cover) when I was sent the race cover I took several pictures of them side by side. See below
Last edited by 408GT; Aug 21, 2014 at 12:12 PM.
OP, that looks like a race cover to me. Here is my race cover on a S475/83:
