Sport Jett .76
08-01-2002, 06:29 PM
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Sport Jett .76
I am working on the Pica 1/8th Scale Corsair and plan to install a Jett, but am debating which one. I'm leaning towards the .76 with the turbojett muffler, but am unsure if the the .61 or .65 would be a better choice.
This is a 60 sized plane that I plane to fiberglass and paint. It will have retracts, and flaps so the weight should be up.
I like performance, and a standard 60 sized engine will not cut it.
I'd appreciate any ideas or comments.
TIA
This is a 60 sized plane that I plane to fiberglass and paint. It will have retracts, and flaps so the weight should be up.
I like performance, and a standard 60 sized engine will not cut it.
I'd appreciate any ideas or comments.
TIA
08-01-2002, 08:07 PM
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Sport Jett .76
Dave...
I looked very intently at the PICA corsair while at the Toledo Show. A very tempting project for me
I even took the SJ-90 with the turbo over to their booth to see how it fit inside the cowl.... looks like a perfect fit.
If you are going to go with the 76 size engine, maybe consider using a SJ-90L-T. It is the same size, actually lighter a bit. The T version is timed for lower RPM, and a bit more torque so you can run a larger diameter prop.
Based on the finished "sport" weight, and what the PICA folks told me about power requirements, using the SJ-60L (small block) is not out of the question if the plane stays light.
Either with the turbo-jett should work great.
I looked very intently at the PICA corsair while at the Toledo Show. A very tempting project for me
I even took the SJ-90 with the turbo over to their booth to see how it fit inside the cowl.... looks like a perfect fit.If you are going to go with the 76 size engine, maybe consider using a SJ-90L-T. It is the same size, actually lighter a bit. The T version is timed for lower RPM, and a bit more torque so you can run a larger diameter prop.
Based on the finished "sport" weight, and what the PICA folks told me about power requirements, using the SJ-60L (small block) is not out of the question if the plane stays light.
Either with the turbo-jett should work great.
08-02-2002, 01:17 PM
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Sport Jett .76
Sounds like the SJ-90-L-T is the way to go. I didn't expect any problems with the engine and muffler fitting, that cowl looks like a one gallon ice cream bucket.
Thanks for your advice, I will be picking up the 90 in the next couple of months.
Thanks for your advice, I will be picking up the 90 in the next couple of months.
08-15-2002, 05:26 PM
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Sport Jett .76
The muffler supplied with the SJ-76 is the "short" one for the 61-90L class of engines. The 90L-T has a slightly longer muffler, and a slightly re-timed sleeve to go along with it.
If you were provided with the 90T long muffler for yout 76, then YES, going back to the standard muffler will get you back to baseline, higher RPM range.
If you were provided with the 90T long muffler for yout 76, then YES, going back to the standard muffler will get you back to baseline, higher RPM range.
08-15-2002, 06:24 PM
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Sport Jett .76
John,
For the 65,76,90L muffler, from the center line of the exhaust opening, back to the tail cone joint is 7".
On the 90L-T, this is 8.5"
basically the 90L-T muffler is the SJ120 muffler tube assy mounted, on the 90 header.
As for returns/swaps, you will have to call or email Dub directly.
Just for info, the stock 7" muffler will work well up to about 16,500 rpm (ground). You just have to prop the engine to get there.
For the 65,76,90L muffler, from the center line of the exhaust opening, back to the tail cone joint is 7".
On the 90L-T, this is 8.5"
basically the 90L-T muffler is the SJ120 muffler tube assy mounted, on the 90 header.
As for returns/swaps, you will have to call or email Dub directly.
Just for info, the stock 7" muffler will work well up to about 16,500 rpm (ground). You just have to prop the engine to get there.
