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Search: Posts Made By: Irwin37mkIV
Forum: Gear & Maintenance   05-07-2013
Replies: 0
Views: 510
Posted By Irwin37mkIV
Borg Warner 'Velvet Drive' Transmission

My boat has a Borg Warner 'Velvet Drive' transmission. The prop shaft rotates slowly with the transmission in neutral. A modest amount of torque is noted when the rotation is stopped by hand. What...
Forum: Gear & Maintenance   08-02-2007
Replies: 1
Views: 638
Posted By Irwin37mkIV
Unhappy 1976 Irwin 37 cc with exhaust issues.

My Perkins 4-108 engine manifold is on the port side. The anti-syphon loop is dry andcrosses over the transmission to starboard, befor water cooling is supplied on the downflow to the perolating...
Forum: Irwin   08-02-2007
Replies: 5
Views: 2,330
Posted By Irwin37mkIV
Red face 1967 Irwin 37 cc with exhaust problem

:o Essman,

Regarding your last 2 note (4 & 5), It sounds reasonable that the original depth sounder transducer was mounted in the location of the 2" capped through hull. Their was abandoned...
Forum: Irwin   07-12-2007
Replies: 5
Views: 2,330
Posted By Irwin37mkIV
Thanks Essman for your info. I agree with...

Thanks Essman for your info.

I agree with your comments/concern about exhaust backpressure as a result of discharging 2' below the water line. I just can't imagine why a 2 inch dia. thru-hull ...
Forum: Irwin   07-06-2007
Replies: 5
Views: 2,330
Posted By Irwin37mkIV
1967 Irwin 37 cc with exhaust problem

My boat has a Perkins 4-108 engine with manifold on the port side. The exhaust leaves the manifold and crosses to starboard via an anti-syphon loop over the transmission, raw water is injected on...
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