V Drives Transmission Rattle

Change your spark plug wires. This is the most common problem with rattling in V-drives. Without going into to much detail, when your wires are not in perfect shape, backlash occurs during each revolution. This creates a little rattling noise in your V-drive. More annoying then anything else. I am sure a few others will chime in with better details.

Never heard of this one. Can you explain?
 
There's a long thread about this issue. I'm on Delta right now using GoGo Internet and it's a little slow with the free usage and I can't find it right now.

I had it happen to my port 8.1 V Drive at 225 hours. Noticed a slight surging underway and a raw gas smell at idle as well.

Replaced the plugs and all symptoms are gone. MM supposedly replaced the plugs at 140 hours, but I now doubt it.
 
Guys, last I checked "Cummings" engines don't have spark plugs or spark plug wires.
 
This is a diesel engine!
As said, there IS no plugs or wires.
The engine sounds fine, comes up to RPM, keeps up with the other engine.
My mechanic told me there were rubber blocks that absorb the shock loads in the damper & he pointed out the black rubber small chunks coming from the bellhousing where it lives.
The question is, how much should this cost?
I called 3 different parts places to check his price (all around $650), but I have no way to check his labor quote ($4,500) <ouch!
 
I did a boat survey yesterday. Both the surveyor and I noticed a rattle sound coming from the port transmission. The mechanic and the broker both said it was just tranmission rattle that is normal with the V-drives. Is this true?

What type of Boat are you looking at buying:huh:Reason I'm asking because I see you already have a 340 and I had a very similar issue. Check out the thread entitled "Transmission Woes" that Hans started and that should be helpful to you.

I solved my problem by replacing the spark plugs.

Good Luck:thumbsup:
 
Don't worry Carter - I won't tell any of the guys at the secret site about this!!
 
Well, anyone else had this done on a diesel engine?
 
Or, has anyone done this on a 460 w/ gas engines?
The damper plate most are talking about here are the steel ones w/ metal springs that absorb the engine shocks(or drive train mishaps).
The damper I'm talking about has rubber to absorb the shock loads, the rubber has disintegrated, so now I have metal on metal contact that makes a horrible clunk when engaged, gets worse when throttle goes up alittle, ten goes away (mostly).
There is quite a pile of rubber that is on top of the bellhousing vent, & in the bilge under it.
I just tring to figure out the cost it should be.
One estimate was to remove the engine & cockpit section(@ a cost of $7-9K)then, have a Cummings dealer take care of the damper as the yard that removed the cockpit only deals w/ Searays, not the Cummings engines of ZF transmissions they tell me.
The removal of the dampers & installations were to be an extra $2,000+.
So, now the $4500 quote is starting to sound good.
It is a big engine, & does fit pretty snug!

Anyone?
 
Has anyone here done this job on a similar boat?
Just trying to make my boat right w/o getting ripped off!
I've read many posts here with people re powering, giving exact quotes for engines, etc.
What is a reasonable cost for this job?
Thanks, & Happy Holidays!
 
You could always contact the guys at Precision Marine in New York 914-235-4023 and ask for an estimate. I had a trans replaced there( ZF 85 IV) and found the service great.
I realise they are a long way from you but at least they would give you some idea what you could expect and prices are reasonable on parts.
 
Oy vey. Here we go again!
 
Well excuse me then. I bet they don't even talk about boats on that site anyway...

I bet that guy with the Marlow knows the address since he has MANS.
 
A man-ly man to be sure ....,,,,.... and we talk about financial deals.......and pigs.
 

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