advancing timing without adjustable pulley

1. PETE-VTR Established Member Joined: Aug 2008 york/ north yorkshire Posts: 1953

   #1 15th June 2010, 18:14

   so the time has come to fit my rebuilt head along with a PT11
   
   iv read the best gains made before a map has had the timing set 2degrees advanced.
   
   can 2degrees be achieved on standard pulley or is it an anjustable jobby?
   
   as i reckon a tooth in advance will be more then 2 degrees!
   
   anyone shed any light?
2. raunchz Saxperience Addict Joined: Jul 2005 Solihull / Bournemouth Posts: 14233 2015 Lapiz Blue Golf R

   #2 15th June 2010, 18:16

   buy an adjustable one
3. axsaxoman Saxperience Forum Bum Joined: Jan 2003 Scotland Posts: 3380

   #3 15th June 2010, 19:54

   Quote:

   Originally Posted by PETE-VTR so the time has come to fit my rebuilt head along with a PT11 iv read the best gains made before a map has had the timing set 2degrees advanced. can 2degrees be achieved on standard pulley or is it an anjustable jobby? as i reckon a tooth in advance will be more then 2 degrees! anyone shed any light?

   count teeth on cam pulley -divide 360 by number of teeth and theres your answer--yes its alot more than 2 degrees.you could always remove the locating notch on the cam wheel --move it correct amount ,then drill both wheel and cam and fit a roll pin to lock it--most peole would chicken out and buy a vernier pulley--no the vts one does not fit
4. axsaxoman Saxperience Forum Bum Joined: Jan 2003 Scotland Posts: 3380

   #4 15th June 2010, 19:55

   jsut to get even more silly ,you could machine up a steel ring to press on to the front idler to alter length of belt thus advancing the timing .
   .
   cheaper and easier to buy a pulley
5. user_15516 Saxperience Post Whore Joined: Apr 2007 Posts: 6640 Integra DC5R & VTS

   #5 15th June 2010, 19:57

   Every engine is different, so yours might not necessarily make best power at 2 deg advanced.
   
   Buy yourself an adjustable pulley and have someone reputable with rolling road facilities adjust the timing for you.
6. user_43898 Established Member Joined: May 2010 leicester Posts: 1446 Clio 182 Inferno

   #6 15th June 2010, 20:18

   i would recommend you dont do that, i do cambelts everyday at work, and if i set the cam pulley 1 tooth out of timing it would more than likely bend valves or be very close and cause poor running and missfiring, get an adjustable one as they are good for very small adjustments (which is what 2 degrees is)
7. user_39821 Saxperience Forum Bum Joined: Dec 2009 Uckfield, East Sussex Posts: 3362 Citroen saxo 1.4 furio

   #7 15th June 2010, 20:19

   Quote:

   Originally Posted by axsaxoman jsut to get even more silly ,you could machine up a steel ring to press on to the front idler to alter length of belt thus advancing the timing . . cheaper and easier to buy a pulley

   You can only increase the length of a toothed belt by a tooth at a time. Not infinitely. So would still adjust the pulley by a tooth at a time as well.
8. PETE-VTR Established Member Joined: Aug 2008 york/ north yorkshire Posts: 1953

   #8 17th June 2010, 11:25

   is there any need for all the sarcasm john? im getting fed up of your snidey comments and constant digs at people on the forum your not doing yourself any favours. theres plenty of other names out there aswell as yourself.
   
   
   homebrew'd adjustable pulley