oshi16
New Member
- Joined
- Jun 25, 2011
- Messages
- 21
- Reaction score
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- Location
- Gosnells, W.A.
- Members Ride
- 85' VK 202 Carby
Hey All,
First I'd like to say that I love this site; and the vast majority of the time I find all the info I need on existing posts and help where I can. But this time I'm in dire need of a complicated problem.
I have an 85' VK commo, black 202 6 cyl. I have Scraped the EST and am running an after market Bosch Remake of the VH dizzy; and an HEI coil. I've also got 9.5m ignition leads and platinum IX plugs. I've changed out the basics, such as a new radiator, thermostat, water pump, starter motor and a hell of other little things.
About 5 Weeks ago I broke down on the freeway. The symptoms at first was of a blown head gasket! However, I later found out that one of my Push rod cover gaskets blew and the 5th cyl rocker saddle/bridge snapped.
In this event I took it upon myself to do a rebuild of the engine (not going further then the head), with all the basics of gasket swapping, fluid flushes and a ****load of cleaning. I also replaced the head bolts with an ARP head stud kit; and also did a Weber 34ADM carby conversion (fyi, I installed a proper conversion kit and the weber is second hand, but came of a running XE).
So all is going well except for how long it took; I hit many small walls and delays, and I mainly only had a couple of hours a night and the weekends to work on it (also this being my first rebuild I learned a lot the hard way), In all it took me a month. However, just under a week ago I had it finished, and I crosschecked as much as I could; until I was going around in circles. So I turned her over to be presented with nothing more then a large carby (flamed) backfire! (p.s. this scared the hell out of me and I though I blew up the carby). I tried once more, and had the same event! Tried twice more, thinking the system may need to get crap out of it or something and two more backfires happened, this time it did not ignite and it was purely made up of fuel air mixture.
Well **** now the trouble shooting begins! My first discrepancy I found is that I had the dizzy cap and lead 180 degrees the wrong way (FAIL OF EPIC PROPORTIONS)...but yeah fixed that quite easy, and tried again; No difference; Fuel air mix backfire (no flame). Next thing I found was that the weber that I got was missing the Idle solenoid, and I did my homework and got the right one (fyi the weber 34ADM used of the XE and XF had two types of Idle Solenoid, XE with a 12v switch type, and the XF with a vacuum operated one, that included a jet I believe). Anyway, I installed it, got a 12v wire running to it and had not change, except for an actual exhaust backfire...against the shed door at half a foot that scared the hell out of me and had my ears ringing for about 10 minutes.
So now this is where I stand; the only other thing I can think of is Valve/cam timing. However I've looked, read, asked and questioned everything to do with this topic 'How do you time the cam in a vk 6 cyl?' 9 times out of 10 I get the response of the EST will handle it, you're not supposed to do it yourself...(*slap*) and the other 1 is time it using the harmonic balancer and timing cover with a timing light (+ get cyl 1 to TDC and the Dizzy rotor button aiming at lead 1). Ok that's all well and good, but how the hell do you get at the timing cover without removing the engine, or dropping the Trans? It is on the back of the block right?
I'm sorry about this essay, I applaud you for reading to the end (*CLAP CLAP CLAP*). And I selfishly ask for any good advice on this; I'm in a desperate situation; as I want to get the girl running asap!
Thanks Heaps Everyone!
Brendan
First I'd like to say that I love this site; and the vast majority of the time I find all the info I need on existing posts and help where I can. But this time I'm in dire need of a complicated problem.
I have an 85' VK commo, black 202 6 cyl. I have Scraped the EST and am running an after market Bosch Remake of the VH dizzy; and an HEI coil. I've also got 9.5m ignition leads and platinum IX plugs. I've changed out the basics, such as a new radiator, thermostat, water pump, starter motor and a hell of other little things.
About 5 Weeks ago I broke down on the freeway. The symptoms at first was of a blown head gasket! However, I later found out that one of my Push rod cover gaskets blew and the 5th cyl rocker saddle/bridge snapped.
In this event I took it upon myself to do a rebuild of the engine (not going further then the head), with all the basics of gasket swapping, fluid flushes and a ****load of cleaning. I also replaced the head bolts with an ARP head stud kit; and also did a Weber 34ADM carby conversion (fyi, I installed a proper conversion kit and the weber is second hand, but came of a running XE).
So all is going well except for how long it took; I hit many small walls and delays, and I mainly only had a couple of hours a night and the weekends to work on it (also this being my first rebuild I learned a lot the hard way), In all it took me a month. However, just under a week ago I had it finished, and I crosschecked as much as I could; until I was going around in circles. So I turned her over to be presented with nothing more then a large carby (flamed) backfire! (p.s. this scared the hell out of me and I though I blew up the carby). I tried once more, and had the same event! Tried twice more, thinking the system may need to get crap out of it or something and two more backfires happened, this time it did not ignite and it was purely made up of fuel air mixture.
Well **** now the trouble shooting begins! My first discrepancy I found is that I had the dizzy cap and lead 180 degrees the wrong way (FAIL OF EPIC PROPORTIONS)...but yeah fixed that quite easy, and tried again; No difference; Fuel air mix backfire (no flame). Next thing I found was that the weber that I got was missing the Idle solenoid, and I did my homework and got the right one (fyi the weber 34ADM used of the XE and XF had two types of Idle Solenoid, XE with a 12v switch type, and the XF with a vacuum operated one, that included a jet I believe). Anyway, I installed it, got a 12v wire running to it and had not change, except for an actual exhaust backfire...against the shed door at half a foot that scared the hell out of me and had my ears ringing for about 10 minutes.
So now this is where I stand; the only other thing I can think of is Valve/cam timing. However I've looked, read, asked and questioned everything to do with this topic 'How do you time the cam in a vk 6 cyl?' 9 times out of 10 I get the response of the EST will handle it, you're not supposed to do it yourself...(*slap*) and the other 1 is time it using the harmonic balancer and timing cover with a timing light (+ get cyl 1 to TDC and the Dizzy rotor button aiming at lead 1). Ok that's all well and good, but how the hell do you get at the timing cover without removing the engine, or dropping the Trans? It is on the back of the block right?
I'm sorry about this essay, I applaud you for reading to the end (*CLAP CLAP CLAP*). And I selfishly ask for any good advice on this; I'm in a desperate situation; as I want to get the girl running asap!
Thanks Heaps Everyone!
Brendan