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Triumph Torque    Cars    Herald/Vitesse  ›  Rocker cover breather fire trap
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Rocker cover breather fire trap Print
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daver clasper
May 19, 2017, 5:29pm Report to Moderator
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Hi

Not got one of these fitted on Vitesse.

Looking at pictures on the net, it looks like a square metal plate fitted, with a gap between R/C breather hole.

Is that about right.

How important is it. I have the original PCV valve fitted which I thought may serve this purpose.

Any help, great please.

Cheers, Dave

  

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Pete Lewis
May 19, 2017, 6:25pm Report to Moderator

Tssc Herts and Beds A.O.
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theres some on ebay ,  its not overly important , but a gauze in the line is prefered to a flame flash back
eg
http://www.ebay.co.uk/itm/RANG.....WE8l171TITEslc4rTq4w


some have a pot scoured plastic gauge mesh inside ,   wire ones break up with vibration and end up inside the induction

dont loose sleep over it but its something to play with while its raining.

Pete



1964 1600 Vitesse 6 Cactus and Black , now  sold
now have T2000   Mk2 saloon in French Blue/grey trim  been  restored without running since 1997
now has power steering ,poly bushed and Alfa 156 seats
location  Luton
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JohnD
May 20, 2017, 8:01am Report to Moderator


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Is it a 'fire' trap?
I thought it was an oil droplet catcher, limiting the amount that gets into the intake.
John


Serial Vitesse racer.

Old Blue.  1995-2001
Silverback. 2001-2007
SofS. 2007 - to date.

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daver clasper
May 20, 2017, 3:18pm Report to Moderator
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Hi and thanks

I think I read somewhere that PVC valve also acts as flame trap. Could well be incorrect info.

Cheers, Dave
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JohnD
May 20, 2017, 8:30pm Report to Moderator


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Why this obsession with 'fire trap'?

Yes, the crankcase is full of oil vapour and droplets, but so saturated that it would not explode.  

Do you remember the "Syrup tin experiment" at school?
Here it is - the teacher's using a Milo-tin (?) but its the same.
Not until the tin (crankcase) contents reach the right mixture of air and gas does it explode.

https://www.youtube.com/watch?v=fQiSCsuxE-k

John


Serial Vitesse racer.

Old Blue.  1995-2001
Silverback. 2001-2007
SofS. 2007 - to date.

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Spitfire6
May 20, 2017, 9:13pm Report to Moderator


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Quoted from Pete Lewis


Hi,
I am using three of the above between my crankcase and rocker-box in the belief they will prevent carry over of oil to my plenum,

Cheers,
Iain.


Me in Burnley, GB
Spitfire 6 EFI Alpha N (Emerald K3 ECU). Big fat 215/40/16's on the backside. (They fit and minimal camber change). Custom cooling system with 20% EG for winter with 2% corrosion inhibitor. LED's all round. NT 5W40 Oil. 3.27 diff with a LSD by Quaife. TR6 Transmission + J Type.

PUG 206CC 2L twin-Cam. NT 5W40 Oil
Automation and control systems engineer.
RIP Step-7 Classic. Long live Portal V14
IEEE Member
G6SBH
Yaesu FT 102 with all the extra's.

http://www.SpitFire6.UK               Main site- work in progress

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esxefi
May 21, 2017, 12:37am Report to Moderator

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OT^^what size are the connections?

you can employ the same theory for gas speed as that used in the induction and exhaust ie the smaller the bore the faster the speed,a small bore will carry oil vapour further down the line and result in clogging a filter sooner.

best bet is large typically 3/4" or more(to be honest I would go 1"on these engines) breather hoses to allow drop out of oil mist into a catch tank.course it all depends on how worn and how much the engine breathes.

OP as john says I thought it was more of an oil baffle than a flame trap
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Pete Lewis
May 21, 2017, 6:13am Report to Moderator

Tssc Herts and Beds A.O.
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The gauze reduces the risk any flame crossing the barrier   same principle as the Davy lamp

used by many makers in the 70s  dont think triumph ever used a seperate one , as barrier was inside the tin covers, as were opel /Vx cavaliers,  used to block up  
Hunter Avenger, Rover Sd1 etc   had them in the tubes
Pete





1964 1600 Vitesse 6 Cactus and Black , now  sold
now have T2000   Mk2 saloon in French Blue/grey trim  been  restored without running since 1997
now has power steering ,poly bushed and Alfa 156 seats
location  Luton
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daver clasper
May 21, 2017, 7:52am Report to Moderator
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Thanks

I didn't know anything about this, hence my original question "is it important?" Not really an obsession.

Anyway, nice to know it's something I don't have to anything about, for a change.

Cheers, Dave

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Pete Lewis
May 22, 2017, 6:51am Report to Moderator

Tssc Herts and Beds A.O.
Club Member
Posts: 3,430
Posts Per Day: 0.78
And with a alloy cover on my 2000  I dont have one either    Hmmmm ,,

I may just get one now we have talked about it

pete


1964 1600 Vitesse 6 Cactus and Black , now  sold
now have T2000   Mk2 saloon in French Blue/grey trim  been  restored without running since 1997
now has power steering ,poly bushed and Alfa 156 seats
location  Luton
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