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 399 Posts Member #: 793 Senior Member Milton Keynes |
6th Aug, 2008 at 09:10:55pm
Ive got an engine thats got undercrown cooling via carburettor jets (A Vmax Scart mod) positioned just above all three main caps in the block and angled up towards the undercrowns of the pistons but Ive noticed that many chaps on the site have a different set up which looks far superior. Does anyone have knowledge of the V Max and opinions on the please. Also doesn't this mod affect oil pressure http://i28.photobucket.com/albums/c248/spe...er1/mini007.jpg
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 6965 Posts Member #: 507 Fastest A Series Mini in the World leeds/wakefield. |
6th Aug, 2008 at 09:22:30pm
no |
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 7765 Posts Member #: 74 I pick holes in everything.. Chief ancient post excavator |
6th Aug, 2008 at 09:24:57pm
Isn't this what Nic has got? On 13th Jul, 2012 Ben H said:
Mine gets in the way a bit, but only when it is up. If it is down it does not cause a problem. |
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399 Posts Member #: 793 Senior Member Milton Keynes |
6th Aug, 2008 at 09:25:03pm
On 6th Aug, 2008 fastcarl said:
no http://i28.photobucket.com/albums/c248/spe...er1/mini007.jpg
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6965 Posts Member #: 507 Fastest A Series Mini in the World leeds/wakefield. |
6th Aug, 2008 at 09:26:43pm
No, to the last seven words of your post,lol |
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Forum Mod  1322 Posts Member #: 28 Post Whore Milton Keynes |
6th Aug, 2008 at 09:48:39pm
I thought nic had some holes simply drilled in his con rods around the big end which shoot oil upto the piston? |
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7765 Posts Member #: 74 I pick holes in everything.. Chief ancient post excavator |
6th Aug, 2008 at 09:49:26pm
Nah, main bearing housing.. On 13th Jul, 2012 Ben H said:
Mine gets in the way a bit, but only when it is up. If it is down it does not cause a problem. |
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 1424 Posts Member #: 2810 Formally spanner181187 Dublin, Ireland |
6th Aug, 2008 at 11:13:57pm
If you use the Ford jets (part number 1053936) then oil pressure doesn't suffer. They have a pressure valve (spring and ball) which stays closed below a certain pressure. I don't know what pressure though! On 12th Nov, 2009 Paul S said:
I think Gary OS has taken over my role as the forum smart arse  On 30th Apr, 2010 Rod S said:
Gary's description is best |
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 8297 Posts Member #: 408 Turbo Love Palace Fool Aylesbury |
6th Aug, 2008 at 11:17:17pm
I believe they stay shut until 30psi..stand to be corrected though! https://www.facebook.com/pages/Fusion-Fabri..._homepage_panel
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 5329 Posts Member #: 140 Proven 200+bhp & Avon Park 05,06,07 Class D 3rd place |
7th Aug, 2008 at 12:19:26am
i don't believe we need under crown colling any way IMO Best 1/4 mile 13.2 seconds @116 mph
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1391 Posts Member #: 1686 Post Whore Oxford |
7th Aug, 2008 at 04:53:09pm
indeed. the ammount of oil being flung up by those gears and the crank negates the reasoning for the undercrown jets unless you have a windage tray. On 19th Feb, 2011 Miniwilliams said:
OMG Robert that's a big one |
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Forum Mod 10980 Posts Member #: 17 ***16*** SouthPark, Colorado |
7th Aug, 2008 at 06:25:54pm
What about #1 piston? I don't see much oil spray from the gears under that cylinder?
On 17th Nov, 2014 Tom Fenton said:
Sorry to say My Herpes are no better Ready to feel Ancient ??? This is 26 years old as of 2022 https://youtu.be/YQQokcoOzeY |
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1391 Posts Member #: 1686 Post Whore Oxford |
7th Aug, 2008 at 06:41:25pm
thats very true, dident think about that.
On 19th Feb, 2011 Miniwilliams said:
OMG Robert that's a big one |
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4018 Posts Member #: 1757 Back to Fucking Tool status Swindon |
7th Aug, 2008 at 06:44:56pm
has anyone got pictures of theses jets and how are they fed? i dont understand how they work really could somone explain for me please :)
Drives
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1391 Posts Member #: 1686 Post Whore Oxford |
7th Aug, 2008 at 06:48:41pm
taken from phills site.
On 19th Feb, 2011 Miniwilliams said:
OMG Robert that's a big one |
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1424 Posts Member #: 2810 Formally spanner181187 Dublin, Ireland |
7th Aug, 2008 at 07:02:45pm
Theres a few pics of them in my build thread too. Although with the way I done it, it will probably confuse the matter more than clarify it On 12th Nov, 2009 Paul S said:
I think Gary OS has taken over my role as the forum smart arse On 30th Apr, 2010 Rod S said:
Gary's description is best |
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Site Admin  9407 Posts Member #: 58 455bhp per ton 12 sec 1/4 mile road legal mini Sunny Bridgend, South Wales |
7th Aug, 2008 at 07:43:39pm
i use the ford jets in my engine. I'm not sure if thaw have helped my engine. But in the last 6 years of running up to 20psi i've never had a problem. And if they don't do anything then nothing lost. Con anyone think of a disadvantage of running them? On 15th May, 2009 TurboDave said:
I think the welsh one has it right! 1st to provide running proof of turbo twinkie in a car and first to run a 1/4 in one!! Is your data backed up?? one extra month free for all Turbo minis members, PM me for detials |
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 4633 Posts Member #: 20 My sister is so fit I won't show anyone her picture Lake District |
7th Aug, 2008 at 07:45:02pm
They're not essential, but, anything that aids reliability must be worthwhile, plus it's a cheap mod anyway.
Edited by Turbo Phil on 7th Aug, 2008. |
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3594 Posts Member #: 655 Post Whore Northern Ireland |
7th Aug, 2008 at 07:45:06pm
Vizard also covers them in the big yellow book... 9.85 @ 145mph
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5329 Posts Member #: 140 Proven 200+bhp & Avon Park 05,06,07 Class D 3rd place |
7th Aug, 2008 at 07:50:14pm
the only disadvantage i can think of Jim is your pulling oil away from the rest of the engine, but i'm sure people on here say the pumps are more then up to the job. Just don't use a Standard oil pump like i use lol. Best 1/4 mile 13.2 seconds @116 mph
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| Home > General Chat > under crown cooling | |||||||
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no to knowing anything about it or no don't do it
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