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Author Topic: CR400, 1974 mod TIMING  (Read 6621 times)

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Offline euro bikes

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CR400, 1974 mod TIMING
« on: November 06, 2011, 04:32:49 pm »
Hi,
What is the right timing for a CR400 ,1974 MOD.   It has a new pomie ignition on it, they say 1.8 off TDC. but it will not run on that.
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oldfart

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Re: CR400, 1974 mod TIMING
« Reply #1 on: November 06, 2011, 04:49:22 pm »
Your not setting the timing at ATDC  by any chance ?? as it should be BTDC.
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Re: CR400, 1974 mod TIMING
« Reply #2 on: November 06, 2011, 05:06:01 pm »
No ,it is in the right place, just think 1.8 is not right i think about 2.8/3.0. I have tried lots of settings but no good, thinking maybe the thing is faulty the spark is not that good.
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Offline HuskyPete

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Re: CR400, 1974 mod TIMING
« Reply #3 on: November 06, 2011, 05:19:23 pm »
3.61mm btdc or 22 degrees
« Last Edit: November 06, 2011, 05:21:57 pm by 67Husky »
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1967 360 Viking, 1969 360 Cross, 1974 250 Mag x 3, 1974 400 Cross x 1, 1974 450 WR, 1975 250GP, 1976 250 WR, 1978 390 Auto, 1982.5 500 Gold Bullet. 1976 390 OR, 78 CCM

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Re: CR400, 1974 mod TIMING
« Reply #4 on: November 06, 2011, 05:22:27 pm »
Thanks 67 husky, i thought that is what it should be.  No instructions came with it! So see what happens this time.
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Offline GD66

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Re: CR400, 1974 mod TIMING
« Reply #5 on: November 06, 2011, 05:34:48 pm »
What is the pommy ignition in question ?
They have some good ideas, but dealing with their companies can be a real struggle.
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Nostalgia's not what it used to be....

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Re: CR400, 1974 mod TIMING
« Reply #6 on: November 06, 2011, 06:42:21 pm »
ELECTREXWORLD Yes you can say that ,i had it for a year before i got to that stage of putting it on ,i tried 6 times to get some imformation in that time from them only when i serial emailed them for a week they answered me .  Saying it was the wrong one it should have a external rotor and the timing was 1.8mls when i asked them to send me some weights for it or the right one they went quiet again. Just had enough.
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Offline GD66

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Re: CR400, 1974 mod TIMING
« Reply #7 on: November 06, 2011, 07:34:11 pm »
They do list an Aussie distributor at email address [email protected] which may be of some help. I tries for ages some years ago to get some sort of sense out of a pommy ignition manufacturer called Kirby Rowbotham for a system for my roadrace CB350 : the more I attempted to nail him down for info the more elusive he became...
Recently I googled him and found apart from being an ignition manufacturer he is a solicitor among other things...yeah, right.... ::)
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Re: CR400, 1974 mod TIMING
« Reply #8 on: November 06, 2011, 07:42:23 pm »
Thanks GD66 I give them a go just some instructions in the box would help!!
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Offline LWC82PE

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Re: CR400, 1974 mod TIMING
« Reply #9 on: November 06, 2011, 09:38:59 pm »
Here is the OZ importer
They are good to deal with
http://www.motorcycle-parts.com.au/ElectrexWorld.htm
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Re: CR400, 1974 mod TIMING
« Reply #10 on: November 29, 2011, 07:23:55 pm »
Giving up taking it off!! and putting the Motoplat back on at least it will push start. Beware buying one, no after sales service.
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Offline flyingdg

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Re: CR400, 1974 mod TIMING
« Reply #11 on: December 07, 2011, 11:31:22 pm »
See if this will help. I would try the 2.3mm - 2.4mm BTDC that pvl sets there at. DG
http://www.hpi.be/pdf/068_1cyl_2T_eng.pdf

http://www.hpi.be/index.htm

This is the OZ dealer.
http://www.shopciscos.com/
« Last Edit: December 07, 2011, 11:39:56 pm by flyingdg »
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Offline bazza

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Re: CR400, 1974 mod TIMING
« Reply #12 on: December 08, 2011, 06:52:01 am »
As old fart said, Electrix are not punter freindly but heaps of tech info on site,2nd kick for the bsa now and motor seems to get off bottom better.
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Offline BultacoMacca

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Re: CR400, 1974 mod TIMING
« Reply #13 on: December 12, 2011, 10:34:27 pm »
Could not get my Bultaco 370 to run any good at all, on my Electrex ignition.
Had it graphed by Small Coils in Geelong and it has variable timing curve going to 10 degrees at 1000rpm, up to 17 degrees at 3500 rpm then drops off to 8 degrees at 7000rpm - no good for Bullys.
The bike runs great on an old Femsa at 20 degrees flat (2.8mm btdc) right through the range.
They don't even make the systems in England, they buy in the things from Europe anyway, as I found out.
Want to buy mine?? Ha!
« Last Edit: December 12, 2011, 10:38:36 pm by BultacoMacca »
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Re: CR400, 1974 mod TIMING
« Reply #14 on: December 13, 2011, 06:45:39 pm »
No one is enough for a door stop!
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