VKEFI Bosch HEI Distributor Toubs on a 202 Kinga'?
The old man is having some troubles with his conversion from points to HEI. The HEI distributor he brought, was out of a VK with EFI. I was telling him that although, it will run, the advance curve may be too much and wouldn't help his engine performance? "as I once heard that this was the case". Anyway he installed it and it ran well for about 2 minutes, and then started to run erratically. HEI Bosch coil is installed "brand new compact type, with new Bosch leads and plugs". We then pulled out the distributor and found that there was one tooth on the composite cog broken? Wondering/guessing that this wouldn't help?. The other thing we've noticed is that the top section? stator plate? had a large excessive amount of movement "maybe an inch". Hence we pulled it down, and found a tiny wire-circlip had dropped from its position. We've now replaced the circlip with a new one, and also the distributor cog as well as needing to add another couple of shims to take up the slack at the bottom end of the distributor shaft.
I can't get up there to install it and get the thing running till' the end of the week, as I live around 200Km's away from him. So I'll have to wait and see how it goes then
Will this now fix the the distributor/spark/ignition issues? or will we have to go for a standard VC-VH Commodore distributor, because of the difference in the advance curve? I had heard once that the advance on an VK EFI distributor is about twice that of a carby-type one? Is this true?
Cheers!
double check the part number
double check the part number for the plugs, dont just get new plugs, get new plugs to suit the vk efi motor, they're different. the points plugs have no resistor (?) and burn electrodes in a couple minutes. i chased this problem on my 308 for weeks.
double check the part number
To make it clear to Holden Fan. VK spark plugs CANNOT be used in a red 202 head.
Here's the basics. A red motor taper seat head uses a 1/2" reach plug pregapped at 0.8mm
A blue, black motor uses a taper seat plug with a 17.5mm reach. If you use a blue/black spark plug in a red head it will protrude into the combustion chamber too far. You will get it to work and it will more than likely not touch the valves BUT there will be 5mm or so of thread on the spark plug exposed within the combustion chamber. This may lead to trouble when you try to remove the plug.
What you need is a set of 202 red plugs with a 1.5mm gap. This happens to be the plug specified for the HEI equipped 253 and 308's. The Bosch number is HR9BCY+.
The overall total advance on a VK EFI motor when new was different to the earlier VC-VH dissy's. Remember however that over time supercessions were made and vacuum units swapped around. Regardless of what part number dissy you started with the unit you have still needs to match the characteristics of your motor. It's best to have it run on a dissy machine to check what's really happening.
My EH Holden Shed
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Thanks for steering us in the
Thanks for steering us in the right direction.
Yeah, it's the static/pre-set advance that I was thinking would be a slight/major issue.
Cheers!
When the hippies are at woodstock, it's time to play Slayer!!!
Static EFI VK Setting
THANKS
A genuine EFI VK HEI Distributor is set at 12 degrees static to make up for its lack of both Centrifugal and Vacuum Advance.
T
Shed
Holdenpaedia, they're the brakes Mate.
Damn. They talk about
Damn. They talk about converting from points to HEI all the time. Didn't think it'd take any more than changing the coil & leads with a HEI distributor to do it.
Thanks for that. I guess part of the problem "if that's the case", is that the red motors run a different type of spark plug from the blue ones. As far as I am aware, the red motors run what you call a hot-plug. They're larger than their blue-type variants, which are called cold-plugs. Wonder if that is the issue. I'll have to check it out when I can get up there this Friday.
Cheers!
When the hippies are at woodstock, it's time to play Slayer!!!
hei ignition
I just put in a dizzy ,coil and leads from a blue motor commodore, left the old plugs in, set it up "near enough" to start, and then timed it with the light, it's running like a bird.
They all came from a carby car though.
Carby/Efi shouldn't make much difference, the cylinder still needs a spark at about 6 degrees BTDc.
That's the kind of result
That's the kind of result we're hoping for. I probably should of got the part number off it and verified it to confirm it actually is an EFI distributor. There's no way it's a guaranteed one unless I can get the number and verify it. So maybe i'm jumping the gun, just a little. I'll install it Friday, get the part number and work from there.
Cheers!
When the hippies are at woodstock, it's time to play Slayer!!!
Relay
You may also need to run a 12v relay in the power circuit as older holdens used a lower voltage circuit,
worked on my dearly departed ht.
That's also another thing
That's also another thing i've heard. Someone told me that the points system only runs at a 9v constant. Don't know if it's true or not. The other thing i've also heard is that there's an in-line voltage dropping resistor in the electrical wiring somewhere, and i'm guessing that's why the old points system doesn't run at 12v?. I can't confirm it, because I don't know enough about them.
When the hippies are at woodstock, it's time to play Slayer!!!
HEI
Have a look through Holdenpaedia (link on the top right under OldHolden) there's a lot of good info about the points to HEI conversion.
Cheers
David
aka hq308belmont
www.hq308.com
My Shed
Thanks Mate!, Will check it
Thanks Mate!,
Will check it out.
Cheers!
When the hippies are at woodstock, it's time to play Slayer!!!
Cool. The Holdenpaedia is
Cool. The Holdenpaedia is very educational. Thanks to the guys who wrote that up. There's a couple of things I wouldn't mind figuring out. There was a post by campbell mentioning that the VK EFI one in his opinion was the best one to use on anything other than a varajet carbie. Just wondering what that means. Is it still good to use on a different type of carbie like the old stromberg? Is the static advance different from a non-efi 202 distributor?
Cheers!
When the hippies are at woodstock, it's time to play Slayer!!!
"I had heard once that the
THANKS
"I had heard once that the advance on an VK EFI distributor is about twice that of a carby-type one? Is this true?"
The EFI VK HEI Distributor has only half the Centrigual Advance of the VC, VH and WB units.
The Vacuum advance Module has the least advance of the lot.
In short the EFI VK HEI Distributor will not deliver the performance that the VC, VH and WB units will.
T
Shed
Holdenpaedia, they're the brakes Mate.
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