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advinnie
Samba Member
Joined: November 18, 2011
Posts: 1389
Location: oxfordshire
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 Posted: Wed Dec 31, 2014 11:22 am Post subject: standoffs or vented engine lid |
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| Hi all I'm almost finished my 2054cc engine build for my beetle but I have a question. At the moment I have a solid non vented engine lid now I know this will be no good for this size engine but should I just fit top standoffs to my non vented engine lid or buy a vented lid and not use standoffs? [/quote] |
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Glenn 
Mr. 010
Joined: December 25, 2001
Posts: 77085
Location: Sneaking up behind you
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| Posted: Wed Dec 31, 2014 11:25 am Post subject: |
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Go for a late model decklid with 4 rows.
I personally hate the look of standoffs.
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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
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Brian
Samba Moderator
Joined: May 28, 2012
Posts: 8340
Location: Oceanside
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| Posted: Wed Dec 31, 2014 1:31 pm Post subject: |
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I think stand-offs are perfect on a full 80's cal-look bug.
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drunkpig
Samba Member
Joined: February 15, 2013
Posts: 12
Location: Canyon, Texas
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| Posted: Wed Dec 31, 2014 1:55 pm Post subject: |
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| Glenn wrote: |
Go for a late model decklid with 4 rows.
I personally hate the look of standoffs. |
I agree. The standoff just looks tacky. Go vented.
And yes - this is my first post. Owner of a 73 SB in dire need of resto, and my resolution for 2015 is to do just that. This is an awesome site. |
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slagathor
Samba Member
Joined: December 08, 2012
Posts: 253
Location: Oakland, CA
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| Posted: Wed Dec 31, 2014 3:19 pm Post subject: |
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| Brian wrote: |
| I think stand-offs are perfect on a full 80's cal-look bug. |
my old 73 (had from 88 to 99) was a mild cal look and my new 73 (bought in 2012) is also a mild cal look. on my old one, i had the 4 vent lid but during the summer i would run stand offs and take them out during winter |
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advinnie
Samba Member
Joined: November 18, 2011
Posts: 1389
Location: oxfordshire
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| Posted: Wed Dec 31, 2014 3:30 pm Post subject: |
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Ok so a non vented lid is not going to work so I need to buy a 4 vent lid and standoffs if the weather get hot. By the way that never happen ls here in the UK  |
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drunkpig
Samba Member
Joined: February 15, 2013
Posts: 12
Location: Canyon, Texas
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| Posted: Wed Dec 31, 2014 3:59 pm Post subject: |
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| advinnie wrote: |
| Ok so a non vented lid is not going to work so I need to buy a 4 vent lid and standoffs if the weather get hot. By the way that never happen ls here in the UK |
Just got back from visiting my son in the UK. You have a most beautiful country. People bought me Guinness to talk in my Texas accent. |
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advinnie
Samba Member
Joined: November 18, 2011
Posts: 1389
Location: oxfordshire
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| Posted: Wed Dec 31, 2014 4:05 pm Post subject: |
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| We try our best to please |
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Tim Donahoe
Samba Member
Joined: December 08, 2012
Posts: 11742
Location: Redding, CA
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| Posted: Wed Dec 31, 2014 5:42 pm Post subject: |
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Advinnie, if you lived in the California Valley, South Texas, Arizona or New Mexico, I'd get the 26 louvered lid--pluss stand-offs (for the hot summers). But you live in Britain. Summertime there is not 100 degrees + during the summer, for weeks on end.
I'd just get the louvered lid.
Tim |
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advinnie
Samba Member
Joined: November 18, 2011
Posts: 1389
Location: oxfordshire
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| Posted: Wed Dec 31, 2014 5:58 pm Post subject: |
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I was thinking the same thing mate.
Anyway happy new year to you lot
Don't know what time it is where you lot are but it's now one in the morning and I'm still going strong |
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vwracerdave
Samba Member
Joined: November 11, 2004
Posts: 15330
Location: Deep in the 405
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| Posted: Wed Dec 31, 2014 7:06 pm Post subject: |
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Stand-Off look UGLY (BFU)
You can also cut a big hole in the decklid behind the license plate and use a 1" space to allow more air to enter the engine compartment.
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Aussiebug
Samba Member
Joined: June 03, 2002
Posts: 2162
Location: Adelaide Australia
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| Posted: Thu Jan 01, 2015 1:01 am Post subject: |
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| advinnie wrote: |
| Ok so a non vented lid is not going to work so I need to buy a 4 vent lid and standoffs if the weather get hot. By the way that never happen ls here in the UK :-) |
Advinnie,
It's not just the ambient temperature (although a hot climate like here in Adelaide Australia does not help).
The real problem is that the doghouse fan pushes more air through the engine than the early fans, and the inlet area of the under-window slots is just not enough to pull all that air into the fan.
The 1500/1600sp engine (68-70) blows 21 cf/sec, and the doghouse fan (71 up) blows 25cf/sec (over 43,000 litres per minute!) at around 4000 engoine rpm.
So without the slotted engine lid, the fan just runs short of cooling air, usually above about 50mph (70mph limit on your motorways, right?). And of course the faster you go the more heat the engine is producing, so it gets worse the faster you go.
I've been there - done that, and I had just s stock 1600 twin port engine in my 68. Huge overheating problem every time I drove it more than 50mph. Fitted a slotted engine lid, and the problem has never returned. Standoffs are not necessary if you have a slotted engine lid.
It's New Years day here and 37c - going to be 42c tomorrow. I think I'll stay indoors with the air conditioner running!
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Rob and Dave's aircooled VW pages
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advinnie
Samba Member
Joined: November 18, 2011
Posts: 1389
Location: oxfordshire
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| Posted: Thu Jan 01, 2015 3:20 am Post subject: |
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Cheers mate I do total understand what your saying but with a 2054cc engine there will be more heat being produced by the engine and the twin dual choke carbs will be sucking more air than stock carb the cooling fan will still be sucking the same amount as normal so with this higher demand for air will the vented lid be ok.
And we to are expecting a higher than normal temperature today we should see 10 degrees Celsius so I think I will stay in today with the heating on |
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Brian
Samba Moderator
Joined: May 28, 2012
Posts: 8340
Location: Oceanside
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| Posted: Thu Jan 01, 2015 3:58 am Post subject: |
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Even with that displacement, vented would do fine.
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Volks Wagen
Samba Member
Joined: February 13, 2013
Posts: 2926
Location: Germany
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| Posted: Thu Jan 01, 2015 3:26 pm Post subject: |
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| advinnie wrote: |
Cheers mate I do total understand what your saying but with a 2054cc engine there will be more heat being produced by the engine and the twin dual choke carbs will be sucking more air than stock carb the cooling fan will still be sucking the same amount as normal so with this higher demand for air will the vented lid be ok.
And we to are expecting a higher than normal temperature today we should see 10 degrees Celsius so I think I will stay in today with the heating on |
Well, whatever you choose last thing you want is the rain pouring down the carb throats... or allowing easy access to leaves into your engine bay, then into the fan then down to sit between the head cooling fins...
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jhicken
Samba Member
Joined: October 24, 2003
Posts: 9466
Location: Fallbrook, CA
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| Posted: Thu Jan 01, 2015 7:24 pm Post subject: |
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Go vented, stand-offs look like ass.
-jeffrey
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