Sherwood RWP stripped bolt

Hello- 1981 Ski Nautique, overheated due to bad impeller or 30 year old hoses. Amazing it had not happened before now. Replaced hoses, changed oil and filter, installing new impeller in RWP, I stripped one of the 3 bolts on the rear housing when reassembling-luckily not the one with the screw above it. I was thinking of getting a longer bolt and grinding a nut to fit on the outside of the housing... does anyone see this as a problem or have a different solution other than re-tapping or replacing the pump? Thanks-

Thanks-Guess I might have tightened too much, housing metal is not steel, seems like cast aluminum but the rest of it is steel.

I am not entirely sure of the application, but have had very good luck with helicoils in the past.    drill the hole out to the recomended helicoil drill size, use the helicoil tap, and then "insert" a new thread.   works good, lasts a long time,   and both cheap and easy

Dreaming wrote: I am not entirely sure of the application, but have had very good luck with helicoils in the past.    drill the hole out to the recomended helicoil drill size, use the helicoil tap, and then "insert" a new thread.   works good, lasts a long time,   and both cheap and easy

There's not enough wall thickness.

Drilling deeper into the cast bronze would be an alternate. You may be able to gain a 1/4" more of thread.

Maybe we should see if there are some torque specs from Sherwood since we sure have had a few stripped thread problems lately. I think some think they are torquing down a cylinder head!! The cover and body sealing surfaces are highly machined with ether an O ring or paper gasket.

8122pbrainard wrote: Dreaming wrote: I am not entirely sure of the application, but have had very good luck with helicoils in the past.    drill the hole out to the recomended helicoil drill size, use the helicoil tap, and then "insert" a new thread.   works good, lasts a long time,   and both cheap and easy There's not enough wall thickness. Drilling deeper into the cast bronze would be an alternate. You may be able to gain a 1/4" more of thread. Maybe we should see if there are some torque specs from Sherwood since we sure have had a few stripped thread problems lately. I think some think they are torquing down a cylinder head!! The cover and body sealing surfaces are highly machined with ether an O ring or paper gasket.

Good call, thus my not knowing the application.   maybe in a different situation the helicoil would work.    Must have been VERY close to edge distance minimum when manufactured?   anyway you could a picture could be posted to show what the Sherwood looks like for future reference?

84SN2001 wrote: Kris we joined the same day and year. "would you just look at that"   youtube this video and you'll get the joke, its dry humor. stupid/funny    youtube=look at this car!!

There you have it :) and really similar boats too.... mine is an 82, but has the later windshield