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Nbk

For Identification experts

31 posts in this topic

Hi

I found this bolt in my bilge when i was winterizing.

I'm worrying about where it could come from.

Is someone able to tell me which bolt it is?

Thanx

imgp1482p.jpg Uploaded with ImageShack.us

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trans output shaft to drive shaft coupler bolt?

i'm not familiar w v-drive but my dd may have one or two 2" bolts that secure the bell housing to the engine.

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Check all the bolts that secure the starter too, I think they're actually longer than 2" but not positive.

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I'm thinking drive shaft coupler also.

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Looks exactly like a shaft coupler bolt to me!

-Paul

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Thank you everybody

I will check that

I also found this brass nut

It fits

Do you think it is corresponding?

ecrouw.jpg

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Yep, it holds that shaft coupler bolt tight.

Edited by dalt1

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From the above posts, I'm going to guess your drive shaft coupler bolt came out. :)

For some reason when I bought my boat, I found about 40 large washers in the bilge, mostly stacked together. They don't look like they belong anywhere on the boat either.

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Yep, it holds that shaft coupler bolt tight.

No it didn't..................... ;)

Just for kicks you should replace that nut.....and maybe the others while your at it.

Edited by Ruffdog

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I'd replace all the nuts and bolts and lock-tite them all. Of course, don't lock-tite a stainless nut to a stainless bolt.

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I'd replace all the nuts and bolts and lock-tite them all. Of course, don't lock-tite a stainless nut to a stainless bolt.

Pete, does that weld them together or something if you do use lock-tite?

Steve B.

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Pete, why loc-tite? what are you supposed to do when you need to check alignment or replace strut bushing?

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Pete, why loc-tite? what are you supposed to do when you need to check alignment or replace strut bushing?

blue loctite just gums up the threads a bit and doesn't make bolts unbreakable. Just tends to keep 'em from coming loose. Red loctite on the other hand can cause some consternation.

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blue loctite just gums up the threads a bit and doesn't make bolts unbreakable. Just tends to keep 'em from coming loose. Red loctite on the other hand can cause some consternation.

I think there are 3 colors indicating different hold strengths but I think the question to Pete is; why is stainless any different?

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Of course, don't lock-tite a stainless nut to a stainless bolt.

IIRC, this was hit on in an earlier thread and as I recall it was due to SS fastener on SS fastener violence. :biggrin: SS, it was stated "has a tendency to gall the metal when it comes in contact with another SS fastener when you don't use anti-seize of some sort. I haven't experience this yet, but I don't work with SS a lot either. I do know that after using "red" Loctite I have broken a number of low grade steel bolts/bolt heads trying to get the bolt out afterwards. I can only imagine the amount of grief, cussing and blood I would spill if I ever user "red" on a SS shaft coupling bolt when it came time to take it off. Not to mention it takes an 80 lb Russian contortionist with hands the size of a Barbie doll to get to the shaft coupling bolts. :Doh:

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Sorry guys,

I meant I wouldn't bolt a SS bolt to a SS nut.

I would loc-tite a SS bolt to a nylok brass nut.

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Thank you all for the advice

Edited by Nbk

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Blue Loctite would be the one to use.....I found out about SS bolts to nuts fusing if you don't use anti seize the hard way! :)

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to the op; did you find where the the bolt belongs?

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Hi

I found this bolt in my bilge when i was winterizing.

I'm worrying about where it could come from.

Is someone able to tell me which bolt it is?

Thanx

imgp1482p.jpg Uploaded with ImageShack.us

Most likely a drive shaft bolt, many malibu's built in TN in 2006 and some of 2007 were built with the WRONG size coupler bolts. 3/8"x2" is wrong (too small), the holes on the v-drive and the shaft coupler actually need a 7/16" x 2" or 7/16"x2 1/4" bolt. depending which drive shaft coupler you have.

Malibu NEVER let this info out. but all boats built after 2007 are now using 7/16" bolts.

FYI

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Most likely a drive shaft bolt, many malibu's built in TN in 2006 and some of 2007 were built with the WRONG size coupler bolts. 3/8"x2" is wrong (too small), the holes on the v-drive and the shaft coupler actually need a 7/16" x 2" or 7/16"x2 1/4" bolt. depending which drive shaft coupler you have.

Malibu NEVER let this info out. but all boats built after 2007 are now using 7/16" bolts.

FYI

Thank you

So you think i have to find 7/16" bolts?

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Thank you

So you think i have to find 7/16" bolts?

I would if it was my boat, most "Do It Best" hardware stores and ACE hardware have good bolt selections, they should have stainless in 7/16". the big issue would be finding the brass nuts. I am VERY agains stainless bolt and stainless nut. The chances for seizing is great. I have had this happen to me 2 two many times.

If you use the smaller bolts and your coupler holes are slightly boogered, there is a very great chance your bolts will loosen again even if you use blue or red loc-tite.

I use ss 7/16 bolt, brass nut, ss lock washer and RED loc-tite.

good luck.

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Interesting this topic popped up.Is there anywhere else these bolts and nuts could come from? I found 2 in my bilge throughout last season and cant find where they go.Ive got all 4 in the coupler and cant figure where they are missing from. 05 xti 220hrs.They are exactly the same as the ones pictured. Thanks

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