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Triumph Torque    Cars    2000/2500/2.5PI  ›  extractor manifold MK1
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Davemate and 12 Guests

extractor manifold MK1 Print
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April 21, 2017, 2:57pm Report to Moderator

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fed up with off the shelf manifolds that fail to line up and fit the ports or face properly, particularly for the MK1 clamped manifolds, I've had one made by JP exhausts. Yes it was more expensive but it does actually fit! I gave them the old manifold as a pattern and the head so they could make the faces fit flush and true.

It wont stay this shiny for long. It will be wrapped again.


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1965 2000 MK1 Rally project, HRCR rally championship, Hexham, 12 car night rallies, trials, autotests etc, etc.

1958 DKW 3-6 Coupe. Two stroke German rally contender, screaming demon! Where modern Audi originated from.

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April 21, 2017, 5:01pm Report to Moderator
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That looks like a very well made manifold. i got a price from Hayward & scott in Basildon near me for a hand made  extractor manifold for my mk2 but went for a Chris witor one, i remember having to get a very big G clamp on the exhaust to pull it away from the engine block after bolting it up to clear the gearbox, have you had any other work done on your engine to compliment the exhaust system

1972 Mk2 2.5 PI on carbs
2005 Fiat Stilo jtd                                              
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April 21, 2017, 5:30pm Report to Moderator

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that mani looks like its got the same flaws as all the rest
wen it comes t,the secondrys fitting

they ev bunged the pipes ..inside the collector, instead of bulging it, so it fots ont oot side.
and, if they owt like the other types, there is a big protrusion into the collector
about an inch or so on the one I ed

this can only restrict flow
since I modded mine, it deffo seems t idle better, and sharper at top end too

butt, looks good, they soon change colour too


One does not have to know how a thing works, to know that it is not working right

Ye div,nt efta no ooa thing wuks, t,no its nut wuk,n reet.

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April 21, 2017, 6:17pm Report to Moderator

Colin Wake
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A mate has had one made up for his small crank early 2000 engined car recently. Was a copy of a Mike the Pipe one. didn't get much change from a grand I seem to remember. Work of art though with proper equal lemgth primaries and welded collectors.

Suspect it will have a red line up near 8000rpm. Can't wait to hear it in action..

Schadenfreude expert and collector of assorted rusty Triumphs on the Essex/Suffolk Border.

2010, 2011, 2013, 2015 and 2016 CT Navigators Championship winner.

10CR 2005, 2007, 2009, 2011 2013 - RBRR 1990, 2006, 2008, 2010, 2012, 2014, 2016 - Nachtrit 2006, 2007, 2008, 2009, 2012 - Chinese rally 2007, 2008, 2009, 2010, 2011 - HCR 2009, 2011, 2012, 2013 (3rd place), 2014. 2015, 2017

On the road.
1968 Spitfire Mk3 : 1973 TR6 : 1967 Herald 1200 Estate 1970 : 1968 Mk1 2.5PI 1968
Off the road
1967 Moss Monaco (Mk1 GT6 based) : 1970 Spitfire Mk4 : 1970 Mk2 2000 auto  : 1964 Mk1 2000  : Mk2 2.5PI
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April 21, 2017, 7:10pm Report to Moderator

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To play safe i gave them a cw manifold which worked well apart from never aligning the ports or faces. This one does. Yes double the price of an off the shelf but it works so job done. Ive gone for a modest 10:1 comp and a cw cam this time, but all gas flowed and balanced with my favourite 175 strombies and ram pipes. Retarded  curve on a standard dizzy. Mated to a stag spec j type a 4.3 diff and quaife hubs. Looking forward to giving it some jip.

1965 2000 MK1 Rally project, HRCR rally championship, Hexham, 12 car night rallies, trials, autotests etc, etc.

1958 DKW 3-6 Coupe. Two stroke German rally contender, screaming demon! Where modern Audi originated from.

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Triumph Torque    Cars    2000/2500/2.5PI  ›  extractor manifold MK1

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