The Triumph Dolomite Club - Discussion Forum

The Number One Club for owners of Triumph's range of small saloons from the 1960s and 1970s.
It is currently Thu Mar 28, 2024 3:29 pm

All times are UTC




Post new topic  Reply to topic  [ 13 posts ] 
Author Message
PostPosted: Sun Jan 28, 2007 11:51 pm 
Offline
TDC Member
User avatar

Joined: Tue Oct 03, 2006 5:48 pm
Posts: 8446
Location: Winscombe, North Somerset, England
Had a good battle with a red topped Ascona last year...

http://www.youtube.com/watch?v=XeCSPOi8n4Y

_________________
Sprintless for the first time in 35+ years. :boggle2: ... Still Sprintless.

Engines, Gearboxes, Overdrives etc. rebuilt. PM me.


1997 TVR Chimaera 450


Image


Top
   
 Post subject:
PostPosted: Mon Jan 29, 2007 5:10 pm 
Offline
Future Club member hopefully!
Future Club member hopefully!
User avatar

Joined: Tue Oct 03, 2006 5:42 pm
Posts: 3937
Location: Forest of Dean
Looking pretty smokey there but you made him work for it. Was it a modern twin cam red top engine he was running then?

Tinweevil

_________________
1978 Pageant Sprint - the rustomite, 1972 Spitfire IV - sprintfire project, 1968 Valencia GT6 II - little Blue, 1980 Vermillion 1500HL - resting. 1974 Sienna 1500TC, Mrs Weevils big brown.


Top
   
 Post subject:
PostPosted: Mon Jan 29, 2007 5:44 pm 
Offline
TDC Member
User avatar

Joined: Tue Oct 03, 2006 5:48 pm
Posts: 8446
Location: Winscombe, North Somerset, England
Actually, he caught me napping, coming up behind some slower cars, but I stayed with him for the rest of the session. I don't know if it was a modern red top or not (what's the difference?). Specked you got that from the CT forum. :D

This was the reason for it smoking so much. I'm not sure if I did any more sessions after that one but I still had a 40+ mile journey back home & it seemed fine.

Image Image

_________________
Sprintless for the first time in 35+ years. :boggle2: ... Still Sprintless.

Engines, Gearboxes, Overdrives etc. rebuilt. PM me.


1997 TVR Chimaera 450


Image


Top
   
 Post subject:
PostPosted: Mon Jan 29, 2007 5:58 pm 
Offline
Future Club member hopefully!
Future Club member hopefully!
User avatar

Joined: Tue Oct 03, 2006 5:42 pm
Posts: 3937
Location: Forest of Dean
Ah yes, seen the CT thread now. Twin cam 16v red top I think means it must be a C20XE series which at 18 years old maximum feels modern to me. Sprint engine is what, 25 years old minimum. Bloody impressive that you kept him at bay for so long and with a rather sick engine too. I suppose Asconas could be massively heavy?

Tinweevil

_________________
1978 Pageant Sprint - the rustomite, 1972 Spitfire IV - sprintfire project, 1968 Valencia GT6 II - little Blue, 1980 Vermillion 1500HL - resting. 1974 Sienna 1500TC, Mrs Weevils big brown.


Top
   
 Post subject:
PostPosted: Mon Jan 29, 2007 7:46 pm 
what was the cause of the piston failure ?


Top
   
 Post subject:
PostPosted: Mon Jan 29, 2007 9:13 pm 
Offline
Future Club member hopefully!
Future Club member hopefully!

Joined: Tue Oct 03, 2006 8:35 pm
Posts: 833
Location: coventry
gtevo on the other site recon's it's detontion???

you might want to read a couple of the threads on there daz in the tr7 section , he on about building an out an out race engine and has got some great idea's , one of which is bigger valves some thing you were on about a while ago.

rich


Top
   
 Post subject:
PostPosted: Mon Jan 29, 2007 9:15 pm 
Didn't think there was much potential for bigger valves in the Sprint head? - you can do a lot of work to the surrounding metal to improve things though...


Top
   
 Post subject:
PostPosted: Mon Jan 29, 2007 11:32 pm 
Nice video, what circuit is it?
Slichtly biger valves is an option, we use BMW (bike) valves 6mm pin and very light.
looking at this piston it could be detonation, but hard to tell without seeing the crown, it could also be just an tired piston what was giving in.
I think a lot of luck, it could chatter total also.


Top
   
 Post subject:
PostPosted: Mon Jan 29, 2007 11:58 pm 
Offline
TDC Member
User avatar

Joined: Tue Oct 03, 2006 5:48 pm
Posts: 8446
Location: Winscombe, North Somerset, England
Hans, yes, I think I was quite lucky as it didn't even score the cylinder. When I took the piston out the bits fell off. I'll take a photo of the crown of the piston & post it on here as I don't know what caused it.

Yes it was Quarry Corner at Castle Combe in Wiltshire.

_________________
Sprintless for the first time in 35+ years. :boggle2: ... Still Sprintless.

Engines, Gearboxes, Overdrives etc. rebuilt. PM me.


1997 TVR Chimaera 450


Image


Top
   
 Post subject:
PostPosted: Tue Jan 30, 2007 9:04 pm 
Offline
TDC Member
User avatar

Joined: Tue Oct 03, 2006 5:48 pm
Posts: 8446
Location: Winscombe, North Somerset, England
Pic as promised. The damage was just below the valve reliefs.

Image

_________________
Sprintless for the first time in 35+ years. :boggle2: ... Still Sprintless.

Engines, Gearboxes, Overdrives etc. rebuilt. PM me.


1997 TVR Chimaera 450


Image


Top
   
 Post subject:
PostPosted: Wed Jan 31, 2007 6:09 pm 
It does look like det bit tooo lean on that cyl
Its not massivley lean though you may have saved it if you had put some octain booster in.


Top
   
 Post subject:
PostPosted: Wed Jan 31, 2007 6:10 pm 
Quote:
gtevo on the other site recon's it's detontion???

you might want to read a couple of the threads on there daz in the tr7 section , he on about building an out an out race engine and has got some great idea's , one of which is bigger valves some thing you were on about a while ago.

rich
What other site ?


Top
   
 Post subject:
PostPosted: Wed Jan 31, 2007 10:22 pm 
Offline
Future Club member hopefully!
Future Club member hopefully!

Joined: Tue Oct 03, 2006 8:35 pm
Posts: 833
Location: coventry
this one daz, he, wrote stuff in thr 7 section and the dolly section to i think.

rich

http://club.triumph.org.uk/forum/


Top
   
Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 13 posts ] 

All times are UTC


Who is online

Users browsing this forum: No registered users and 8 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Limited