

Latest - Mk2 PI Estate on Bay of evil
by Philat32
< Su carbs PI rebuild | |
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![]() posts: 462 non member |
posted Sat 5th Mar 2016
reply 121 of 134
Just paid for another load of awesomeness from Wishbone Classics, all Im waiting on now is the flywheel which is due soon. |
Tags - 2000 2500 2.5PI | |
![]() posts: 2352 non member |
posted Sat 5th Mar 2016
reply 122 of 134
I would say that 10.5 is the highest you should aim for, even with Megajolt. If the timing is slightly out you run the risk of detonation. I'm not sure how high you can safely go with a distributor, bearing in mind that its advance curve probably won't be optimal for your new engine. I remember seeing a Spitfire with a rebuilt high compression engine, that someone naively bolted a standard distributor to. The advance curve was completely wrong for the new motor, and after an hour or so it melted the ring lands due to detonation. Remember, it's not a bodge if no one finds out! 1969 Herald 13/60 (Signal Red). Built as CKD in New Zealand, imported to Australia in 2008. 1972 US-spec GT6 Mk3 (Green). Nearly finished, with 2.6L, EFI, a Supra 5-speed gearbox and Subaru diff. |
Tags - 2000 2500 2.5PI | |
![]() posts: 8769 Wessex (Bristol & Bath) group joined on Sat 19th Nov 2005 |
posted Sat 5th Mar 2016
reply 123 of 134
I ran just under 10:1 with my PI on the 132 cam and fully electronically managed. Somerset UK Vitesse Mk 1.5 Convertible EFI, Survivor of RBRR 2008, HCR & 10CR 2009, HCR 2010, 10CR2011, HCR 2012, 10CR2013, 10CR2015, HCR 2016 & HCR 2017. GT6 Mk3 Roto - project in progress Spitfire MKIV son's project now on the road as a daily driver 2.5 PI Saloon now EFI (PIe?), Engine rebuilt and running sweet. Diff howling...... Survivor of HCR 2013 & 2014 Gone to live in Swansea http://www.tengaston.plus.com |
Tags - 2000 2500 2.5PI | |
![]() posts: 1703 Australia joined on Sat 25th Sep 2004 |
posted Sun 6th Mar 2016
reply 124 of 134
I would not go over 10:1 with Triumph Pistons - my mate destroyed a lot of Mazda Pistons ring lands with 11:1 but he always used too much advance with 98 octane and octane booster 1965 Mk1 2000 2.7PI - broken engine ![]() 1969 TR6 PI Signal Red 1970 Mk2 2.5PI Estate Wedgewood 1972 Stag - engine build in progress 1973 Mk2 2100 EFI Howling mad Daily Driver. 2002 Land Rover Disco TD5��- rattle , rattle, sip, sip�� ![]() http://triumphwestoz.blogspot.com |
Tags - 2000 2500 2.5PI | |
![]() posts: 462 non member |
posted Sun 6th Mar 2016
reply 125 of 134
Thanks guys. Looks like I'll go for 10.1 then. The dizzy I have has 13 degrees stamped on it, so I think that means 26 degrees crank, and I run no vac advance. The 26 degrees on the dizzy is in addition to the at idle advance am I right? |
Tags - 2000 2500 2.5PI | |
![]() posts: 462 non member |
posted Sun 6th Mar 2016
reply 126 of 134
Nick or Andy, could you recommend a good trigger wheel that will fit the Triumph pulley with least modification that you have used? |
Tags - 2000 2500 2.5PI | |
![]() posts: 462 non member |
posted Sun 6th Mar 2016
reply 127 of 134
I just had another "you learn something new every day" moment today. I have been cleaning parts and getting the gear box ready, thought Id slip the new clutch release bearing onto the carrier so i could reassemble the box. So when I get the new bearing it's much bigger- o'oh. Then I tried the clutch plate on the gear box spline and yep, too big again. A short net search has revealed that a tr6 and 2500 have different input shafts! Who would have thought, should really be the other way round I reckon. So now Im up for a new plate and release bearing, and hopefully the 2.5 release bearing mates ok with the tr6 clutch cover. Feelin pretty stupid, but still wondering why the difference in the first place- I really thought all these engines were interchangeable. |
Tags - 2000 2500 2.5PI | |
![]() posts: 9288 Essex group joined on Sat 17th Sep 2005 |
posted Sun 6th Mar 2016
reply 128 of 134
I always assumed that the TR had the bigger input shafts as they were "manly" cars and should be a challenge to drive, and of course bigger is better. Schadenfreude expert and collector of assorted rusty Triumphs on the Essex/Suffolk Border. |
Tags - 2000 2500 2.5PI | |
![]() posts: 1703 Australia joined on Sat 25th Sep 2004 |
posted Sun 6th Mar 2016
reply 129 of 134
Quoted from josh18 Mine was very much generic - modified to fit the fan boss Andy Thompson, Perth WA So many cars so little time 1965 Mk1 2000 2.7PI - broken engine ![]() 1969 TR6 PI Signal Red 1970 Mk2 2.5PI Estate Wedgewood 1972 Stag - engine build in progress 1973 Mk2 2100 EFI Howling mad Daily Driver. 2002 Land Rover Disco TD5��- rattle , rattle, sip, sip�� ![]() http://triumphwestoz.blogspot.com |
Tags - 2000 2500 2.5PI | |
![]() posts: 8769 Wessex (Bristol & Bath) group joined on Sat 19th Nov 2005 |
posted Sun 6th Mar 2016
reply 130 of 134
Quoted from thescrapman They do now....... but I've a feeling that back in the day you'd find different parts were used for TR6, 2500PI and 2000 pressure plates with the TR6 having the strongest spring, then PI then 2000. Certainly when I researched clutch options for the PI with a local specialist he came up with different numbers for PI Vs 2000, but these days one size fits all apparently. That time I used an LUK kit which was listed for 2000, 2500 incl PI and Vitesse/GT6. The pressure plate part no also cross reference to a kit for TR5 and 6. Nick Nick Jones Somerset UK Vitesse Mk 1.5 Convertible EFI, Survivor of RBRR 2008, HCR & 10CR 2009, HCR 2010, 10CR2011, HCR 2012, 10CR2013, 10CR2015, HCR 2016 & HCR 2017. GT6 Mk3 Roto - project in progress Spitfire MKIV son's project now on the road as a daily driver 2.5 PI Saloon now EFI (PIe?), Engine rebuilt and running sweet. Diff howling...... Survivor of HCR 2013 & 2014 Gone to live in Swansea http://www.tengaston.plus.com |
Tags - 2000 2500 2.5PI | |
![]() posts: 8769 Wessex (Bristol & Bath) group joined on Sat 19th Nov 2005 |
posted Sun 6th Mar 2016
reply 131 of 134
Quoted from josh18 Both mine were cut down sections of a Ford Sierra 1.8 CVH front pulley, bolted and dowelled to the pulley nose. I even managed to retain the mechanical fan on the PI though it was a bit close to the rad. Probably doesn't help you much...... Vitesse Note sensor location is a bit daft as the sensor has to be removed to change the fan belt.... Nick Jones Somerset UK Vitesse Mk 1.5 Convertible EFI, Survivor of RBRR 2008, HCR & 10CR 2009, HCR 2010, 10CR2011, HCR 2012, 10CR2013, 10CR2015, HCR 2016 & HCR 2017. GT6 Mk3 Roto - project in progress Spitfire MKIV son's project now on the road as a daily driver 2.5 PI Saloon now EFI (PIe?), Engine rebuilt and running sweet. Diff howling...... Survivor of HCR 2013 & 2014 Gone to live in Swansea http://www.tengaston.plus.com |
Tags - 2000 2500 2.5PI | |
![]() posts: 8769 Wessex (Bristol & Bath) group joined on Sat 19th Nov 2005 |
posted Sun 6th Mar 2016
reply 132 of 134
PI Somerset UK Vitesse Mk 1.5 Convertible EFI, Survivor of RBRR 2008, HCR & 10CR 2009, HCR 2010, 10CR2011, HCR 2012, 10CR2013, 10CR2015, HCR 2016 & HCR 2017. GT6 Mk3 Roto - project in progress Spitfire MKIV son's project now on the road as a daily driver 2.5 PI Saloon now EFI (PIe?), Engine rebuilt and running sweet. Diff howling...... Survivor of HCR 2013 & 2014 Gone to live in Swansea http://www.tengaston.plus.com |
Tags - 2000 2500 2.5PI | |
![]() posts: 2352 non member |
posted Sun 6th Mar 2016
reply 133 of 134
My trigger wheel came from Trigger Wheels.com: http://trigger-wheels.com/store/contents/en-uk/d5.html. It's about 130mm diameter, with a small central hole, mounted on an alloy 'fan eliminator' http://www.pattonmachine.com/Fan-Eliminator-Kit.htm Remember, it's not a bodge if no one finds out! 1969 Herald 13/60 (Signal Red). Built as CKD in New Zealand, imported to Australia in 2008. 1972 US-spec GT6 Mk3 (Green). Nearly finished, with 2.6L, EFI, a Supra 5-speed gearbox and Subaru diff. |
Tags - 2000 2500 2.5PI | |
![]() posts: 462 non member |
posted Mon 7th Mar 2016
reply 134 of 134
Thanks guys |
Tags - 2000 2500 2.5PI | |
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