Curious what you all think of this dyno read out? |
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Curious what you all think of this dyno read out? |
Tdskip |
Sep 20 2021, 01:02 PM
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#1
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Advanced Member Group: Members Posts: 3,686 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
Several twists and turns I’m getting close to getting that XN turbo big bore engine back to me. This is the one that had a very elaborate homebrew turbo set up turns out was only running on three out of four cylinders when I did the initial teardown. I ended up having to swap the case out for another one because when it was rebuilt for the first time it was developing crazy high will pressure hand given all the unknowns and some funkiness with it that we discovered we decided it would be better to just use another case
Shop let me know going in the carbs I gave them would be snappy and responsive but probably leave horsepower on the table. The shop also noted that this was not run using optimized headers and exhaust is probably a bit restrictive for this sort of build. Thing that really jumps out to me here is that the engine is making lotta torch, or at least seems to be a lot of work, down low and had a very usable or p.m. That, to my son white uneducated eyes, suggest that should be fun for regular street use. What do you all think? |
jd74914 |
Sep 20 2021, 02:07 PM
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#2
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Its alive Group: Members Posts: 4,780 Joined: 16-February 04 From: CT Member No.: 1,659 Region Association: North East States |
Did you keep the original heads?
Seems like the it's quite restricted given how flat that curve is. I'm not totally in the flat torque curve makes it more fun camp though-you tend to end up with rough neck-snapping type of shifts* because your tractive force (what the tire is actually putting to the pavement) curve gets pretty wacky. Later tonight I'll see if I can pull your curve into a spreadsheet to show. *when shifting agressively |
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