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 timing gears, metal or hybrid?
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Derek
V4 Guru

United Kingdom
2039 Posts

Posted - 14 Apr 2021 :  16:42:46 Show Profile Reply with Quote
The dealer fit steel gears fitted along with the AC was for safety with the piston type York compressor. If fitting AC now you would almost certainly use a rotary compressor which is much kinder on the gears. Fitting with old fibre gears likely risky but new fibre ones should be fine. IMO.
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green96v4
V4 Mad

Canada
606 Posts

Posted - 14 Apr 2021 :  17:37:06 Show Profile Reply with Quote
thanks Derek - that's exactly what I wanted to hear and ties in nicely with another opinion I've heard on this subject
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Derek
V4 Guru

United Kingdom
2039 Posts

Posted - 16 Apr 2021 :  12:00:58 Show Profile Reply with Quote
Thanks for replying to my milestone 2000 post.#128526;
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Woody
V4 Guru

United Kingdom
2541 Posts

Posted - 16 Apr 2021 :  20:49:47 Show Profile Reply with Quote
Welcome to Guru status Derek :-)
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Derek
V4 Guru

United Kingdom
2039 Posts

Posted - 17 Apr 2021 :  12:26:39 Show Profile Reply with Quote
Thanks Woody. I thought I was Guru before but can't go back to check now. lol. I don't know what the post number/status grades are, not that it matters of course. It might just be 1000 looking at the members list.
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green96v4
V4 Mad

Canada
606 Posts

Posted - 11 May 2021 :  12:20:47 Show Profile Reply with Quote
update on this, (and for anyone in two minds about the strength of the original gears) Ian at Specialised Engines wasn't a fan of the original fibre gears and recommended the newer "hybrid" gears, even though they have fibre teeth, they are much stronger than the originals (and 50 years younger)

after hearing from a couple of different sources that these will also be up to the task of taking the extra load of a rotary piston a/c compressor (if I ever get to doing that job) as well as peace-of-mind they shouldn't be a failure waiting to happen, I bit the bullet and ordered a set.

Taking the original gears off confirmed my doubts about the strength of the fibre - the gear puller changed angles as I was tightening and touched the large gear...and crunch, now useless (superglue maybe?)



looks like there was also some tooth damage from before (previous rebuild?)






New gears look cool too, shame they get covered up

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melle
V4 Guru

United Kingdom
3386 Posts

Posted - 11 May 2021 :  13:25:13 Show Profile Reply with Quote
The cam gear usually needs a little persuasion with a tyre lever, but I never use a puller on the cam and balance shaft gears, they should slide right off. The crank gear you can't remove without a puller.

www.saabv4.com
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green96v4
V4 Mad

Canada
606 Posts

Posted - 11 May 2021 :  13:38:40 Show Profile Reply with Quote
yes I had the puller on the crank gear and one of the fingers touched the cam gear which caused the damage (and as you said cam gear just came off with 2 tyre levers gently behind them)
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melle
V4 Guru

United Kingdom
3386 Posts

Posted - 11 May 2021 :  14:12:31 Show Profile Reply with Quote
I always remove the balance shaft and cam gears first, not sure if there's an "official" order, but this works for me. Looking shiny by the way Matt!

www.saabv4.com
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green96v4
V4 Mad

Canada
606 Posts

Posted - 11 May 2021 :  16:07:56 Show Profile Reply with Quote
thanks - yes I think the official order is how you've stated, possibly where I went wrong (cam shaft gear wouldn't budge until the others were off, but by then the damage had been done)

you want to see the gearbox (currently in South Carolina and the guy rebuilding it is making my work on the engine look shabby!!)
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Dynorog
V4 Fanatic

United Kingdom
239 Posts

Posted - 12 May 2021 :  20:50:00 Show Profile Reply with Quote
Looks damn good to me Matt
Cheers

Dynorog
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green96v4
V4 Mad

Canada
606 Posts

Posted - 12 May 2021 :  21:43:15 Show Profile Reply with Quote
thanks - I've even gone a little OCD and ordered ABA clamps for all the hoses, I'll add more images as I progress, it's almost like a restoration 2.0 on the engine bay!
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melle
V4 Guru

United Kingdom
3386 Posts

Posted - 12 May 2021 :  21:49:50 Show Profile Reply with Quote
That's not OCD, just good engineering practice.

www.saabv4.com
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Derek
V4 Guru

United Kingdom
2039 Posts

Posted - 14 May 2021 :  11:39:26 Show Profile Reply with Quote
I notice that you have managed to find a 34ICH with the fuel feed spigot in the correct one of the 3 possible positions. A good find.
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green96v4
V4 Mad

Canada
606 Posts

Posted - 15 May 2021 :  13:19:12 Show Profile Reply with Quote
bought it off Paul Green (post thread on this forum somewhere) he posted it to my parents in Oxford and I brought it back in my hand luggage a couple of years ago - that was fun getting through airport security!!
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