Deck fill cap

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SeaGator

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Need help finding a deck fill cap from a 1988 Taiwanese trawler.

It is a fine thread whereas most replacements I find are coarse thread.

See attached pictures for sizing. Thanks!
 

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One thing I neglected to say is that like many older boats, I cannot readily reach the fitting from underneath the deck so I cannot replace the whole flange without doing a major fiberglass job.
 
You shouldn’t have to. Remove the three screws lift to access hose and hose clamp. Swap out.
 
I tried that. With a flashlight I can see the end with two hose clamps and the +/-2" hose sitting flush with the deck underside. Even if I had flexible 4' arms to loosen the clamps, the hose needs to be backed off.

Keep the ideas coming! A replacement cap still is the easiest if one can be found. I have no problem with replacing the whole shebang but can't get to the clamps.
 
Those threads could be 1 3/4 inch if boat was made for America. Looks like you’re measuring in metric. Maybe you have been looking at metric threads, which could be the problem.
 
Had similar problem, needed to replace fuel fill hose to tank & get at those clamps. Was on the fill near the helm door. Got inside the step there & cut an access hole to do it.
 
No, But I have tried Marine Connection in Ft Pierce. They only sell whole units and those caps are all course thread so can't buy one and cannibalize it. I'll give Sailorman a call on Monday.
 
If your (plastic?) calipers are accurate and you are measuring the outside of the exterior threads correctly, the size, (1.73" is what I see) is not the appropriate size for a 1.25" or 1.5" x 11.5 TPI NPSM thread.

It could be a 1.375"x 11 TPI British Straight Pipe Thread (a very rarely used size) that should measure 44.323 mm or 1.745" in outside diameter. If you get yourself a thread Gage you should be able to determine the TPI (Threads Per Inch) fairly easily or if you are proficient with the use of the calipers you can measure it.

If you think the thread is Metric (it is a Taiwanese boat) your measurement of 43.94 mm , say 44mm, does not correspond to any Metric thread size, which jump from 42 to 45 mm.

It is a good thing that you have one that fits as that will be key to getting one made if that proves cheaper than the fibreglass repair work.
 
I can't make out the gauge very well, but looks like 1.73" SAE or 44mm metric.

Any chance the TT was actually made in Hong Kong?

-Chris
 
If your (plastic?) calipers are accurate and you are measuring the outside of the exterior threads correctly, the size, (1.73" is what I see) is not the appropriate size for a 1.25" or 1.5" x 11.5 TPI NPSM thread.

It could be a 1.375"x 11 TPI British Straight Pipe Thread (a very rarely used size) that should measure 44.323 mm or 1.745" in outside diameter. If you get yourself a thread Gage you should be able to determine the TPI (Threads Per Inch) fairly easily or if you are proficient with the use of the calipers you can measure it.

If you think the thread is Metric (it is a Taiwanese boat) your measurement of 43.94 mm , say 44mm, does not correspond to any Metric thread size, which jump from 42 to 45 mm.

It is a good thing that you have one that fits as that will be key to getting one made if that proves cheaper than the fibreglass repair work.
The calipers are plastic but fairly accurate for what it is. I will try to get a thread gauge. I may very well just end up having one made at a machine shop.
 
I can't make out the gauge very well, but looks like 1.73" SAE or 44mm metric.

Any chance the TT was actually made in Hong Kong?

-Chris
No, I have documentation that shows which yard in Taiwan it was made. Some President, Tayana and one particular Albin model was made there as well. My trawler was an economy almost one of a kind unit that was far from high end makes of the era.
 
Need help finding a deck fill cap from a 1988 Taiwanese trawler.

It is a fine thread whereas most replacements I find are coarse thread.

See attached pictures for sizing. Thanks!
Check out Victoryproducts.com
They make a fitting supposedly for the thru deck fuel and water fill.
The Lord Nelson Victory Tugs have the same fine thread cap...........haven't had to buy one myself, but other LNVT owners have.
 
Check out Victoryproducts.com
They make a fitting supposedly for the thru deck fuel and water fill.
The Lord Nelson Victory Tugs have the same fine thread cap...........haven't had to buy one myself, but other LNVT owners have.
Thank you, but that web address doesn't seem to work. Can you check that please? Thanks!
 
One thing I neglected to say is that like many older boats, I cannot readily reach the fitting from underneath the deck so I cannot replace the whole flange without doing a major fiberglass job.
I had the same thought on my GB36 and came to find that a removable panel in/under the settee provided good access to the deck fill fitting and the tank top. Otherwise there would be no way to service/change the fill hose.
 
This might get confusing, but here goes:

Rekord Marine Enterprises is a local Vancouver Canada wholesaler of numerous marine brands. They only have one small facility, but have been around for almost a lifetime.

They also have their own brand that they call Victory Products. They buy these products (mostly hardware) in bulk from wherever, put them in a package with fancy writing on it and through their dealer network, reportedly sell them around the world.
I don't think they actually make anything, except money.

Here is their website. Rekord Marine is a distributor of quality marine products including our own Victory Products.

From that site if you are just an average Joe like me you can go to the Victory Products site to see what it says.

It may take a phone call to help them understand your dilemma.

You would be wise to ask if the have a stocking dealer in the Maryland area, you might get lucky!
 
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Check out Victoryproducts.com
They make a fitting supposedly for the thru deck fuel and water fill.
The Lord Nelson Victory Tugs have the same fine thread cap...........haven't had to buy one myself, but other LNVT owners have.
Seeing other replies, the correct website is Victory-products.com. I would ask them about a 'cap only'. Check your thread pattern again, as noted in other post.s
 
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