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Exhaust deflector question
Page 1 of 1
Exhaust deflector question
wha-tah-hey Sat Oct 29, 2016 3:22 pm
A new-to-me .049 product engine has the exhaust deflector on it, a first for me.
Checking it over, I see it has no crankcase gasket - does the deflector replace it or should it have the gasket also?
Thanks.
Checking it over, I see it has no crankcase gasket - does the deflector replace it or should it have the gasket also?
Thanks.
Last edited by wha-tah-hey on Sat Oct 29, 2016 6:13 pm; edited 1 time in total
wha-tah-hey- Rest In Peace
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Re: Exhaust deflector question
Marleysky Sat Oct 29, 2016 3:46 pm
My me109 super stunter has the deflector and a gasket. See page 34 of 44 in this instruction sheet: Q1977 parts list
https://5dbfd882-a-62cb3a1a-s-sites.googlegroups.com/site/coxengineforumfiles/Cox%201977%20Parts%20Catalog.PDF?attachauth=ANoY7cqHSzDPlPBXc2qb5ldh5ueZatEFoHtBZmjoWx5dVwp4piXeYIdc2EyZ9K_G1KZg68guGGV492pi00HmBMUf8szGkdDdFCSV0Fh4wzsgDOg3JbjfuFRlBm5tkbxf-u9Wf7-jAz_2TRCF2C6TWwIdmJPglXcLjfUuw92edNBiYMGsR5PLGXE_2nnipgxItjrauIA203f1L_AoxaacgC3YVfHgfqgOC8fwPIvc5WW6I2QKjBwthaE%3D&attredirects=0
Edit: see page 39 of 44. My typo,
https://5dbfd882-a-62cb3a1a-s-sites.googlegroups.com/site/coxengineforumfiles/Cox%201977%20Parts%20Catalog.PDF?attachauth=ANoY7cqHSzDPlPBXc2qb5ldh5ueZatEFoHtBZmjoWx5dVwp4piXeYIdc2EyZ9K_G1KZg68guGGV492pi00HmBMUf8szGkdDdFCSV0Fh4wzsgDOg3JbjfuFRlBm5tkbxf-u9Wf7-jAz_2TRCF2C6TWwIdmJPglXcLjfUuw92edNBiYMGsR5PLGXE_2nnipgxItjrauIA203f1L_AoxaacgC3YVfHgfqgOC8fwPIvc5WW6I2QKjBwthaE%3D&attredirects=0
Edit: see page 39 of 44. My typo,
Last edited by Marleysky on Sat Oct 29, 2016 6:30 pm; edited 1 time in total (Reason for editing : Wrong page number)
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Re: Exhaust deflector question
roddie Sat Oct 29, 2016 3:56 pm
wha-tah-hey wrote:A new-to-me .049 product engine has the exhaust deflector on it, a first for me.
Checking it over, I see it has no crankcase gasket - does the deflector replace it or should it have the gasket also?
Thanks.
I would say that the PO probably ran it that way. I've never gotten a definitive answer regarding something similar; the later flanged cap-style reed-retainer. Neither part is made of gasket material.
I'd say that an actual gasket is more to seal the "case" than the mating-surface. That said; I do recommend running a gasket against the case. Some people "deck" the case by lightly rubbing on super-fine (600+) grit paper on a plate of glass. This will smooth it out nice. I use an orbital-motion.. and only a few strokes on the paper.
It won't hurt to run a gasket with that deflector.
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Re: Exhaust deflector question
wha-tah-hey Sat Oct 29, 2016 4:51 pm
Well, I don't see how that stamped surface can mate with the crankcase better than the machined surface of a gasket-needing tank, so I'll use a gasket anyhoo - "belt & suspenders" if not necessary.
Thanks, guys.
Add:
Pg 39 in the '77 Cox catalog shows an engine with deflector and a gasket.
Thanks, guys.
Add:
Pg 39 in the '77 Cox catalog shows an engine with deflector and a gasket.
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Re: Exhaust deflector question
RknRusty Sat Oct 29, 2016 6:06 pm
Or a light coat of Permatex in lieu of a gasket.
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Re: Exhaust deflector question
Marleysky Sat Oct 29, 2016 6:33 pm
RknRusty wrote:Or a light coat of Permatex in lieu of a gasket.
Don't tell Bernie or Matt!! That.
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