help, 315hp cummins turbos, engine mounts keep crackin

[mike hennessy]

my engin mounts keep cracking where the rubber is. i have the b series and was thinking of switching to the c series mounts since they are mader for the 400hp and should be a little tougher,

i have spun 3 shafts cuz of this running home in the last couple years and am sick of it.

anyone got any ideas

that the only thing i can think of, and dont answer you shoulda boguht yanmars or some sh%^&#^% like that. haahahahaha

marlin are snappin and i'm waitin for my new prop

mike
www.cabo-matapalo.com

[FASTWATER]

Mike my brother had the same problem over and over again he finally had a friend who had a machine shop mill him the same mounts out of stainless steel and has had no problems since this was a fix although costly but has been trouble free ever since he took in one of the old mounts and they machined stainless mockups problem solved, just a idea!!!PEACE

[LuckyDrew]

Chinese steel. No bueno.

[homewrecker]

Mike do you have down angle trans? Did you repower from any other engines and use the same basic engine beds and if so what gears and engines came out? I would think you have 220A 10 degree down angles now,what gear ratio and what size wheels are you turning?Twin or single engine application and if twin is it the same side when this happens?

[thums up]

Hey MIke,

Go to Bertram31.com and post, several of the guys have them in there berts.. They always have good info.. May have to wait week though. Most of the guys are on a annual trip to Panama.

[Captain Jay Kavanagh]

Make Sure your Engine Stringers (or beds) are not moving.

My experience with broken motor mounts was caused by loose and moving engine stringers.

Look for cracks where they join the bottom of the boat and bulkheads.

Run the boat and watch them, when going over boat wakes.

If they are moving, break your mounts every time.

[mike hennessy]

not sure about degree of mounts will check it out

twin screw, by the way, seams like the port side blows everytime

will checkthe stringer but its a new boat damnit!!!!

thanks guys will check bertrum also

thanks for the comments