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HZ Red motor

hey guys

I recently got a hz going but when i was testing it i sheared all the teeth off the camshaft timing gear. im assuming this happened only due to the engines age, and that the gear was hard and brittle. Can anyone tell me how to remove the gear off the camshaft? it seems to be bonded on there pretty well and id rather put a new gear on the cam rather than replacing it with another cam/shaft out of another engine.

Cheers

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These are Press Fitted on. You need to take the Cam out, and take it to a mechanic who has a press, they will be able to take the old one off and put the new one on. This only cost me $20 when i got it done last year.

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[http://gallery.oldho...|Cuddy's Shed]

ive changed them in the car but its a fiddly job.you have to cut the gear and the steelgear centre off(grinder and chisel)without dropping any crap in the sump.then you have to press/knock it on using a lever put through the fuel pump hole to hold the cam so you dont knock the cam through the back cam plug.oh and hope you dont damage the lobe for the fuel pump.cheers

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I had a gear shear all of its teeth off in the middle of nowhere. Mechanics came out and fixed it right there. Not too sure of everything they did but they didn't drop the sump or anything and it took a while to do. Repco used to have metal replacements, maybe they still do; apparently the metal gears are noisier.

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thanks guys

Its easy enough for me to pull the cam out of the engine, so i will do that. Ill call local mechanics and hopefully theyll have a suitable press (Cheers Ashley186).
Info much appreciated

Cheers

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pull the engine and drop the sump i rebuilt a motor that had the gear replaced and the pick up and sump was full of fibre gear,

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- Theres no replacement for displacement-

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T

My Shed

Holdenpaedia, they're the brakes Mate.

i remember back in the 90's this was a "several a week" excercise at my uncles workshop, h-series holdens and commodores were still very popular. several hours work from towed in to driving back out.

usually, if the engine is old enough for this to happen, there will be enough of a sludge layer in the sump to "trap" any chunks of fibre from reaching the pickup. i wouldnt really bother pulling the sump unless its worth heaps. if it was worth heaps, arguably it would no longer have had a fibre gear...

you can still get fibre gears (well you could as of 3 years ago i know) but they are about triple the cost of an alloy replacement. they say the alloys are noisy but thats a fallacy. you cannot hear the difference.

on that note i never throw away the alloy gears when i strip engines - they dont really wear out - so if you or anyone else here would like one, i would give the gear away for the price of postage. got several at the moment. you would just have to bear with me as i find it hard to get to a post office in business hours...

might be time to put in a bit better camshaft while you are at it??

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Replace the crank gear as well. A new alloy cam gear with an old steel crank gear will be noisy.

Jeff.

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