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Club Triumph - Cars - 2000/2500/2.5PI
2000/2500/2.5PI

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Club Triumph forum - Cars - 2000/2500/2.5PI - Pi dizzy
< Su carbs Pi dizzy
"Davemate"
posts: 3240
North London & Herts group
joined on Thu 26th Nov 2009
 posted Sat 20th Feb 2016

Today I got a pi dizzy (numbers agree) from a local chap,there's no play in the shaft but there's also no vacume advance, as I've got a couple of other crappy dizzys can I fit one of their vacuum things to it or is it not needed.
I've looked on eBay and there's a dizzy and metering unit for sale and the dizzy hasn't got a vacume advance thing on it.

 Herald 1500,rallyfied- overdrive,swing spring with 1500 spit diff,440lb front springs, adjustable height spax on front and back, trunionless conversion,thicker arb,rear roll cage,harnesses,bucket seats,extra gauges,Vitesse steering wheel,genuine 5.5j smoothies wheels,4 branch manifold
Still for sale

Mk1 2000 saloon,now a 2.5   

Timing marshal CT autosolo Bovington 2011,2012,half of 2013,2014 and 2016
Marshalled Essex winter rally 2013
RBRR 2012, co driver
24th Nachtrit 2012, navigator
Chinese rally 2013, navigator
Essex winter rally 2014, navigator
HCR 2014, co driver
RBRR 2014, co driver
Essex winter rally 2014,navigator
Warwickshire winter rally 2016,driver
HCR 2016 driver
Essex winter rally 2016 navigator
Mr Radders official calm down buddy
Tags - 2000 2500 2.5PI
"piman"
posts: 3333
non member
 posted Sat 20th Feb 2016 reply 1 of 4

Hello Dave,

I've forgotten exactly what engine you have and whether it's been modified? The simple answer is yes you can fit the vacuum module from a different distributor. Also the PI distributors usually have less total mechanical advance so you may want to swap the rotor shaft also. (Just look inside and the advance is stamped  there, I would expect something like 11 for teh PI distributor (22 degrees engine advance)

Alec

 Oswestry, Shropshire.

Mk1 1\2 P.I.,Jaguar Mk 2, very long term restoration. Jaguar X Type estate 2.5, Hymer 564 motorhome.
Tags - 2000 2500 2.5PI
"Davemate"
posts: 3240
North London & Herts group
joined on Thu 26th Nov 2009
 posted Sat 20th Feb 2016 reply 2 of 4

Alec
I don't even want to pretend that I know anything about advance curves, all I'm going by is this chart.
My engine is
2.5
Pi cam
6-3-1 and sport system
S inlet manifold with HS6 carbs
I've been told a pi dizzy would be good to go with the pi cam

Herald 1500,rallyfied- overdrive,swing spring with 1500 spit diff,440lb front springs, adjustable height spax on front and back, trunionless conversion,thicker arb,rear roll cage,harnesses,bucket seats,extra gauges,Vitesse steering wheel,genuine 5.5j smoothies wheels,4 branch manifold
Still for sale

Mk1 2000 saloon,now a 2.5   

Timing marshal CT autosolo Bovington 2011,2012,half of 2013,2014 and 2016
Marshalled Essex winter rally 2013
RBRR 2012, co driver
24th Nachtrit 2012, navigator
Chinese rally 2013, navigator
Essex winter rally 2014, navigator
HCR 2014, co driver
RBRR 2014, co driver
Essex winter rally 2014,navigator
Warwickshire winter rally 2016,driver
HCR 2016 driver
Essex winter rally 2016 navigator
Mr Radders official calm down buddy
Tags - 2000 2500 2.5PI
"Ridgetone Triumph"
posts: 1900
non member
 posted Sat 20th Feb 2016 reply 3 of 4

Quoted from Davemate
Alec

I've been told a pi dizzy would be good to go with the pi cam



Who told you that    Poo has a Delco Remy dissy and we all know how well he goes  

 1973 Triumph 2.5 PI Estate on su's, awaiting plans (naughty) Hmm maybe I'll leave him as is (think)
1981 Triumph TR7 V8 DHC��work now started (dance) work now stopped(dizzy) work started again(woot) work stopped again (what) work started again (dizzy) work stopped again   work started again   work stopped again   work started again (happy) work stopped again   work started again  
1971 Triumph 2000 Sport
Tags - 2000 2500 2.5PI
"piman"
posts: 3333
non member
 posted Sun 21st Feb 2016 reply 4 of 4

Hello Dave,

it seems I've got the figures back to front, the PI has greater advance than the carburettor engines.
For what its worth, my engine, which I ran for a short time on HS4 carburettors did not run quite as it should but I didn't really do a lot of tinkering as it was just a stop gap until I sorted the injection system.

Alec

 Oswestry, Shropshire.

Mk1 1\2 P.I.,Jaguar Mk 2, very long term restoration. Jaguar X Type estate 2.5, Hymer 564 motorhome.
Tags - 2000 2500 2.5PI


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