Author Topic: Magnum GP 25 (Read 972 times)

Allen Eshleman · « **on:** June 15, 2022, 07:38:18 AM »

Does anyone have a cheap viable solution for reviving a Magnum GP 25 with no compression. Man, it has power if I can get it started. Maybe be sold for parts. However, I do want the venturi and NVA.

Geoff Goodworth · « **Reply #1 on:** June 15, 2022, 07:00:11 PM »

A piston and liner from the LA 25.

I had a GP 25 that would start and run happily in cold weather and never looked like starting when it was warm.

I replaced the piston and liner and the engine has been fine ever since.

It's been on a Ringmaster for quite a few years so, some years, it only gets one outing per year. I use auto transmission fluid as after run oil and it usually starts second or third flick after hanging on the wall for a year.

Motorman · « **Reply #2 on:** June 15, 2022, 09:52:59 PM »

Quote from: Geoff Goodworth on June 15, 2022, 07:00:11 PM

I use auto transmission fluid as after run oil and it usually starts second or third flick after hanging on the wall for a year.

+1

Allen Eshleman · « **Reply #3 on:** June 17, 2022, 06:04:21 AM »

That sounds like an easy try. I will try that.

Motorman · « **Reply #4 on:** June 17, 2022, 09:20:19 AM »

If the LA25 fits you could get an ABC from Brian Garner. The LA factory sleeve is Ni, if you want to refurbish your P/L Just get a medium pinch from RayARacing.com I have used him several times, he does nice work. Assuming the Magnum is ABC.

Motorman

BillP · « **Reply #5 on:** June 18, 2022, 11:04:31 AM »

Be aware the GP has a sprinkler venturi/nva so it's not a direct plug and play to an OS FP...

Author Topic: Magnum GP 25 (Read 972 times)

Allen Eshleman

Magnum GP 25

Geoff Goodworth

Re: Magnum GP 25

Motorman

Re: Magnum GP 25

Allen Eshleman

Re: Magnum GP 25

Motorman

Re: Magnum GP 25

BillP

Re: Magnum GP 25