ENGINE HELP!

[Poochimama]

have you got a good earth from the battery to the motor?
i found a friend was having power n spark problems and i checked it out,
found he had a very bad n dirty earth to the motor from the battery.
(causes the motor to run rough with minimum spark, causing unburnt fuel and black buildup in  exhurst)
i always put a new battery earth cable on all my vehicles, nice thick ones.
on my beddy,s i usually go from the battery earth to the back of the gearbox, (its shortest distance from the battery)
hope this helps.

cheers marty

Steve said he doesnt understand why u would attach the earth lead to the gear box,when it normally attaches straight to the body???

[Poochimama]

did the 186 have a coil from a blue motor???

Steve said No....(Im the secretary here,hes crap at typing,lol!!)

[vintageholden]

i ment dizzy...

[Warren]

have you got a good earth from the battery to the motor?
i found a friend was having power n spark problems and i checked it out,
found he had a very bad n dirty earth to the motor from the battery.
(causes the motor to run rough with minimum spark, causing unburnt fuel and black buildup in  exhurst)
i always put a new battery earth cable on all my vehicles, nice thick ones.
on my beddy,s i usually go from the battery earth to the back of the gearbox, (its shortest distance from the battery)
hope this helps.

cheers marty

Steve said he doesnt understand why u would attach the earth lead to the gear box,when it normally attaches straight to the body???

Because the engine is isolted from the body by the engine mounts.

Going via the body and then to the motor can create losses due to poor or corroded connections, so direct from battery to motor/box removes that likely hood.

You still need an earth to the body as well for the other circuits to work though.

Warren

[Poochimama]

AHHHHH ok steve said thanku!
He will sus that one out tomorrow.

Thanx for all putting yr boof heads together boys,U ROCK!
Cheers,
shell

[Marishka]

have you got a good earth from the battery to the motor?
i found a friend was having power n spark problems and i checked it out,
found he had a very bad n dirty earth to the motor from the battery.
(causes the motor to run rough with minimum spark, causing unburnt fuel and black buildup in  exhurst)
i always put a new battery earth cable on all my vehicles, nice thick ones.
on my beddy,s i usually go from the battery earth to the back of the gearbox, (its shortest distance from the battery)
hope this helps.

cheers marty

Steve said he doesnt understand why u would attach the earth lead to the gear box,when it normally attaches straight to the body???

yes this is correct, there is an earth connection to the body, (as warren said ,this is for the lights and other body circuts, etc ) but you need a good earth from the neg battery terminal to the motor or gearbox for the engine coil etc to get full power, thus giving the ignition great spark.
and the back of the gearbox is in line with the battery.(so only a short cable is needed,) make sure its a good thick battery cable though and long enough to not be too tight )
eyelet both ends , put it onto the battery clamp bolt n tighten and i use the original 4 speed shift mount bolt hole on a 4 speed, possibly the rear gearbox mount bolt on an auto ,(gearbox side of the rubber mount though.) 

this might fix your problem, here,s hopeing,
cheers marty

[MaTTe]

Heya,
i dont normally earth the motor direct to the battery, i earth the battery to the body and the motor to the body, which is similarly good as the battery direct to the motor, although cant hurt to have a direct line.

Poochi, we really need to know exactly what you got with the new motor, and what you used, as well as what was replaced with items from the previous motor.
Did the motor come with manifolds (intake and exhaust), distributor, coil, plug wires, spark plugs, head.. etc
The more info the better.
Everything you changed, or even unbolted and then rebolted together is a possible source for problems.

Common issues with the blue motor/red motor swap is the fact that red motors use resistor wires (or a ceramic resistor) to reduce the voltage down from 12volt to prevent burning the points.
You were provided a link on this so without me following the link i hope it has shed some light on the fact.
If you are running a resistor coil, on a HEI dizzy you will likely have dramas. most coils will say 'use with resistor' so check that.

Have a look at your spark plugs, the colour usually tells a story however at this point you are more interested in the gap. You can set them to 28thou in the short term to cross them off the list..

Now you say its running rich, was the carby the same carby that came with the blue motor?
Most carby shops will buga a carby beyond repair.. not all shops but most.. things we've seen come out of performance carby shops intended to be used on race cars have gone straight in the bin at huge expense to the racers.

If they merely gave it a clean then thats fine, but i could tell you a number of no-no's to look out for which will sound like jibberish.

Does the carby leak any fuel onto the manifold? if so it may be a leaking needle and seat, or an incorrect float level.

You can easily change the jet to make it run leaner, however i dont think you should need to if it was running fine on the blue motor previously, if from the red motor i'd think you'd need to richen it.

Do you have an adjustable jet, or fixed jet?

Check you dont have any broken valve springs, they're easy to check with the rocker cover off..

What did you actually do to the head when it was off?
if you cleaned it with the valves out, you should relap the valves so they make a good seat - you should do this every time the head is off regardless really..

What timing are you running on the distributor? and have you changed it since if was in the old car?
Do you have a proper count back timing light, or just a standard light that flashes at one speed?


a bit to keep you going anyway.. im tired of typing
I hope this helps

[Poochimama]

WOW,You certainly know yr shit,lol!
THANKU as we are STILL having problems after every other buggers suggestion,we still havent eliminated this dam problem.tried them all?
Its got steve stumped!
He said he will do all u said and get back to u, so grateful for everyones input as we eventually HAVE to find this bloody problem if everyone else gives thr know how!
Cheers
Shell&Steve,Back soon with an update & more info for u  W.A man.

[Poochimama]

YEAH it IS sooooo frustrating, i feel for my brother as hes done so much work on it for me 

Yep steve said sell the lot:

186Red Motor originally in beddy $100 It went fine from Qld to Melb,but steve said he hasnt had time to take head of and see condition of it! NOW SOLD.
Pair extractors for 186 $50- NOW SOLD.

Also a warn 202 other motor for parts $50
2 x 202 trimatics $50ea Both still avail-

He was going to put the lot on ebay,but if u guys want them?
Live near the Tulla airport.
Steve: 0415-950-995

[restoreid]

Hey Pooch you said your bro took the head off the 202 to give it a cleanup when he reinstalled have you checked if you are getting oil up to the rockers My hydrolic cam followers were all gumed up & wasnt getting oil to the top of the motor so I had to put new cam followers in now its getting plenty up there If the cam followers arnt pumping up that will give you a miss There's another thing to check Cheers Reid