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Dangermouse Samba Member

Joined: November 23, 2005 Posts: 1314 Location: Beautiful New Zealand
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Posted: Sun Jul 06, 2025 4:16 pm Post subject: Re: 1500 Single Port conversion to doghouse style cooler? |
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https://www.thesamba.com/vw/forum/viewtopic.php/viewtopic.php?t=454369
I ran a 14mm drill through the engine mounting hole and, with two washers flat-edged on the grinder to accommodate the lip on the gearbox side and an oversize nut as a spacer, the insert pulled into the case nice and smooth.
_________________ Do not follow me, for I may not lead. Do not lead me, for I may not follow. Do not walk beside me either; actually just bugger off and stand over there will you. |
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EVfun  Samba Member

Joined: April 01, 2012 Posts: 6133 Location: Seattle
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Posted: Sun Jul 06, 2025 2:12 pm Post subject: Re: 1500 Single Port conversion to doghouse style cooler? |
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As far as that insert goes, an easier to install option for an older case may be a Keensert. They use standard or metric drills and taps and can be installed without any special tools.
Has anyone measured the difference between the #1 and #3 head temperatures with the older inline oil cooler vs the doghouse system? _________________
Wildthings wrote: |
As a general rule, cheap parts are the most expensive parts you can buy. |
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Zundfolge1432  Samba Member
Joined: June 13, 2004 Posts: 12566
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Posted: Sun Jul 06, 2025 12:31 pm Post subject: Re: 1500 Single Port conversion to doghouse style cooler? |
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stevo wrote: |
Glenn wrote: |
The captive nut can be purchased and easily pressed in.
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Can one discuss this operation or share a link about the smart way to install w/o making a mess? |
The insert isn’t just simple press fit into the older pre 71 case. Need a reamer or step drill up to size and account for interference fit. I’ve done but can’t remember the sizes. Engine needs to be out of the car |
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veedubcrazy Samba Member

Joined: February 14, 2005 Posts: 2172 Location: La Porte, Tx.
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Posted: Thu Jul 03, 2025 8:46 am Post subject: Re: 1500 Single Port conversion to doghouse style cooler? |
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My '67 survives fine in the Houston heat during the summer with the non-doghouse shroud. The heat in Amarillo is no different. Just make sure your oil is topped off at all times, the screen on the oil cooler isn't blocked, the fan blades are clean and the vanes in the shroud have no obstructions. Have all the cooling tin in place and have it timed correctly as well... Good luck! _________________ 1967 Deluxe Sedan
1971 Squareback - "The Silver Surfer" |
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Cusser Samba Member

Joined: October 02, 2006 Posts: 33042 Location: Hot Arizona
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rayjay Samba Member
Joined: March 26, 2008 Posts: 1590 Location: Buford GA
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Posted: Thu Jul 03, 2025 5:58 am Post subject: Re: 1500 Single Port conversion to doghouse style cooler? |
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Put some grease on the splines before installing. |
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Dusty1 Samba Member
Joined: April 16, 2004 Posts: 2091
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Posted: Thu Jul 03, 2025 4:30 am Post subject: Re: 1500 Single Port conversion to doghouse style cooler? |
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stevo wrote: |
Glenn wrote: |
The captive nut can be purchased and easily pressed in. |
Can one discuss this operation or share a link about the smart way to install w/o making a mess? |
To remove a captive nut:
Thread a bolt into it until the threads are flush. Use a drift to tap it out.
Installation, quick 'n' dirty:
Tap it back into the case with a hammer.
Or,
Installation, modest finesse:
Tap it back into the case with a hammer and a block of wood.
Or,
Installation, modest finesse:
Thread a bolt into it until the threads are flush. Use a drift to tap it in.
Or,
Installation, less finesse:
Thread a bolt into it. Tap on the bolt instead of the insert. You'll mar the bolt while the insert stays pristine.
You could actually press the insert into the case using a bolt and washer if you're worried about breaking your case by hammering on it. You'll have to go seriously Neanderthal on it to break it but anything is possible.
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stevo Samba Member

Joined: January 22, 2004 Posts: 976 Location: the eugeniverse
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Posted: Wed Jul 02, 2025 9:53 pm Post subject: Re: 1500 Single Port conversion to doghouse style cooler? |
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Glenn wrote: |
The captive nut can be purchased and easily pressed in.
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Can one discuss this operation or share a link about the smart way to install w/o making a mess? _________________ When you cross an Irishman, they never forget. I mean, never. |
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Glenn  Mr. 010

Joined: December 25, 2001 Posts: 79432 Location: Sneaking up behind you
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Posted: Mon Jun 16, 2025 8:46 am Post subject: Re: 1500 Single Port conversion to doghouse style cooler? |
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If you have a small port case then use the "green" seals.
The captive nut can be purchased and easily pressed in.
_________________ Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"
Member #1009
#BlueSquare
עַם יִשְׂרָאֵל חַי |
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borninabus  Samba R&D Dept.

Joined: May 18, 2006 Posts: 4718 Location: Arizona Highways
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Posted: Mon Jun 16, 2025 8:41 am Post subject: Re: 1500 Single Port conversion to doghouse style cooler? |
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the problematic areas of this conversion are figuring out the correct oil cooler adapter to engine case seals and access to the engine mounting bolt/nut behind the doghouse. both are "easily" addressed. _________________ 88 Van WBX, A/T - 13 JSW TDI 6M/T - 2012 Touareg TDI Sport |
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Glenn  Mr. 010

Joined: December 25, 2001 Posts: 79432 Location: Sneaking up behind you
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Posted: Mon Jun 16, 2025 8:01 am Post subject: Re: 1500 Single Port conversion to doghouse style cooler? |
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It sure couldn't hurt. _________________ Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"
Member #1009
#BlueSquare
עַם יִשְׂרָאֵל חַי |
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Cusser Samba Member

Joined: October 02, 2006 Posts: 33042 Location: Hot Arizona
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Posted: Mon Jun 16, 2025 7:37 am Post subject: Re: 1500 Single Port conversion to doghouse style cooler? |
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I think it would be of benefit in Texas heat. And chances are pretty good that your 1500 SP engine has been rebuilt in its lifetime, so could be 1600 SP.
When I had 1600cc SP in my 1970 VW, the #3 and #4 spark plug rubber seals would become brittle in a few months due to heat, Arizona. #1 and #2 seals stayed flexible. I now have 1600cc DP in my 1970. _________________ 1970 VW (owned since 1972) and 1971 VW Convertible (owned since 1976), second owner of each. The '71 now has the 1835 engine, swapped from the '70. Second owner of each. 1988 Mazda B2200 truck, 1998 Frontier, 2014 Yukon, 2004 Frontier King Cab. All manual transmission except for the Yukon. http://www.thesamba.com/vw/forum/album_page.php?pic_id=335294 http://www.thesamba.com/vw/forum/album_page.php?pic_id=335297 |
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sharpstick Samba Member
Joined: July 27, 2005 Posts: 456 Location: Amarillo, TX
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Posted: Mon Jun 16, 2025 7:08 am Post subject: 1500 Single Port conversion to doghouse style cooler? |
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I was thinking of converting my 1500 single port to a dog-house style oil cooler but I was told there is not much benefit on a single port motor. I understand they provide more efficient cooling and was just wondering if this were true. |
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