XJS ( X27 ) 1975 - 1996 3.6 4.0 5.3 6.0

ignition curve between HE and PreHE

Thread Tools
 
Search this Thread
 
  #1  
Old 04-22-2013, 08:16 PM
calvindoesntknow's Avatar
Senior Member
Thread Starter
Join Date: Dec 2011
Location: new york
Posts: 882
Received 65 Likes on 55 Posts
Default ignition curve between HE and PreHE

I need to know if there are different curves for the stroker build. i have both distributors HE and pre HE. but i need to help figuring out which distributor to use.
 
  #2  
Old 04-23-2013, 12:49 AM
Greg in France's Avatar
Veteran Member
Join Date: Jan 2012
Location: France
Posts: 13,339
Received 9,092 Likes on 5,355 Posts
Default

Originally Posted by calvindoesntknow
I need to know if there are different curves for the stroker build. i have both distributors HE and pre HE. but i need to help figuring out which distributor to use.
Definitely different curves. Sorry I do not know what they are!

Greg
 
  #3  
Old 04-23-2013, 03:29 AM
warrjon's Avatar
Veteran Member
Join Date: May 2010
Location: Vic Australia
Posts: 4,638
Received 2,576 Likes on 1,712 Posts
Default

Ditch the Dissy and go MegaSquirt or MegaJolt electronic then the advance can be programmed to get the best from your setup. I suspect neither will be ideal.
 
  #4  
Old 04-23-2013, 08:31 AM
ronbros's Avatar
Veteran Member
Join Date: Jul 2010
Location: Austin tx and Daytona FL.
Posts: 7,362
Received 1,231 Likes on 939 Posts
Default

i agree with warron, a standalone the best way to go, especially with you r planned engine.

wrong ignition timing control, could puff the magic dragon!
 
  #5  
Old 04-23-2013, 08:59 AM
calvindoesntknow's Avatar
Senior Member
Thread Starter
Join Date: Dec 2011
Location: new york
Posts: 882
Received 65 Likes on 55 Posts
Default

yeah but guys im running into this problem of $$$$$$$ I've got about 4500$ into the motor already. and that's before fuel system
 
  #6  
Old 04-23-2013, 10:56 AM
ronbros's Avatar
Veteran Member
Join Date: Jul 2010
Location: Austin tx and Daytona FL.
Posts: 7,362
Received 1,231 Likes on 939 Posts
Default

AH, comon Cal. a good race engine should cost anywhere from $10,000, up to $30,000, and more.

i'll admit tho some of the exotic ECU systems are expensive;case in point, a was at a swap meet , and bought this kool stan/al system cheap $500. bucks.

put it on Ebay next day no reserve, it went for $4000. and it was a used setup.

yes it did more things than i would ever need, it also was a two in one box system, if ECU troubles showed up,a flip of a switch changed to another program,all in one box,nice.

anyway you gotta do what you can afford. with your type of engine build, you will have to make tuning adjustments, its no longer a factory stock engine, it will require different fuel and ign. timing, as a minimum, to outperform stock setup.
 
  #7  
Old 04-23-2013, 11:47 AM
MustangSix's Avatar
Senior Member
Join Date: Dec 2008
Location: orlando, FL
Posts: 183
Received 41 Likes on 29 Posts
Default

The basic problem is that neither distributor will have an optimum curve for your particular engine. For all you know at this point, perhaps neither one will be even acceptable.

Both distributors are somewhat tunable by changing springs, weights, and stops, but without a dyno, a knock sensor, and a distributor machine, you won't know what works best.

In the long run, a Megasquirt or similar will be loads cheaper to use and tune. Use either distributor. Lock the advance and use the existing pickup in the distributor. Then control timing with the MS ECU.
 
  #8  
Old 04-23-2013, 05:15 PM
calvindoesntknow's Avatar
Senior Member
Thread Starter
Join Date: Dec 2011
Location: new york
Posts: 882
Received 65 Likes on 55 Posts
Default

yes, im going to eventually switch to a fully tunable distributorless system. but I want to start with one of thoes to start.
 
  #9  
Old 04-23-2013, 05:22 PM
calvindoesntknow's Avatar
Senior Member
Thread Starter
Join Date: Dec 2011
Location: new york
Posts: 882
Received 65 Likes on 55 Posts
Default

plus the orignal group c and group 44 cars ran dizzys. if they can do it, I can do >
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
MILOU13
XJ6 & XJ12 Series I, II & III
7
11-25-2015 02:39 AM
Lawrence
XJ40 ( XJ81 )
3
10-01-2015 08:36 AM
millertic
PRIVATE For Sale / Trade or Buy Classifieds
0
09-30-2015 08:11 PM
UKnFor-dluv-expat
X-Type ( X400 )
1
09-26-2015 08:40 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


Quick Reply: ignition curve between HE and PreHE



All times are GMT -5. The time now is 09:55 PM.