The gates catalogue I have in front of me lists 9 different 3/8pitch belts with 52 teeth not including their racing series (kevlar) can you provide more info to narrow it down? I'll post a pic later if I can. Nothing I can find by that part number I'm guessing its a superseded dayco part number but retailers often obfusicate their part numbers for obvious reasons.

Unless I've misunderstood the whole dilemma.

I know Gates makes kevlar ones, I bought one from Mini Mania US but it's on my car.
But a year or 2 ago both myself and Karcraft chased the part number with Gates here in Sydney, with no joy. All they would say was not available.

Here's a pic of the Gates Kevlar one-
http://www.minimania.com/part/C-AJJ3328 ... evlar-Race

My last new belt is marked `Dayco 052 S 190 Isoran 052 R 190'.
It is 52 teeth, 3/8 pitch, 19mm wide.

Sides of teeth are angled, bottom is flat, they are not involute curved like Nissan etc belts.

The Dayco timing belt catalog I checked online this week had no 52T belts listed.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

The fact that they do this seems to defy logic. The fact that a metal item stretches more than something that is flexible and partly made up of rubber

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Tim

Actually it is not flexible in the way you are referring to. Yes it bends but it is woven kevlar reinforced so it does not stretch. Next time you get hold of kevlar, try to stretch it Bullet proof vests don't stretch, but are flexible. The rubber you refer to is almost just a coating...

Two totally different things. It's like saying a Samurai Sword or leaf spring suspension because it bends and flexes can also change length by stretching it. Totally not true

Chains wear in the many hundreds of micro linkages and pins and hence length increases, not actually stretch. Steel doesn't stretch all that much either...

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Lillee - 1969 Morris Mini K

Usually it is the width of the belt - the Suzuki G13b has a belt service life of 40k for a Mk1 and 60k for a Mk2 or 3. The Mk1 has a 20mm wide belt, the others a 25mm, so it takes longer to wear & fail.


Well, the belt length in a mini does meant the teeth get more wear, but long belts like my Porsche with a 1" x 219 teeth (and a belt that is over 2m long!) not only stretches over time but must compensate for the thermal expansion of the engine & belt - all of those necessitate a tensioner.

Be thankful the mini does not need a tensioner. They normally cost a LOT more than the belt.

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Too many cars, and too little time.

The gates part numbers are very logical the part number you want should be X195L075 where X is the material kevlar or otherwise L is the tooth shape and the numbers should be length and width. IIRC

Gates are an OEM supplier so unless you have an engineering degree they wont give you the time of day. It was probably easier to say not available than risk a verbal contract for a part that they haven't extensively tested in a particular scenario. in this case a mini.

Better yet get the part number of the belt you bought from minimania next time you have accses to it. All gates part numbers are printed on top of thier belts.

I gave them the part number and showed them the Gates kevlar belt. Actually it was their local distributor in Kings Park, not Gates direct.
3 weeks later they just said nope, it was not available.
They are made by Gates in Japan, only for MiniMania in US, if I want any Gates ones that's where ya get em apparently.

[edit] typos

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

That part number I provided brings up thousands of suppliers so the made especially for mini mania sounds a bit sus.

Google says
"Your search - X195L075 - did not match any documents.

Suggestions:

Make sure all words are spelled correctly.
Try different keywords.
Try more general keywords".

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Belts are funny things...

In the US Honda Civic belts last 100K miles.... in Oz they wear out in 100K kilometres.... Old style Volvo belts are lifed at 100K .. but my last one was still alive at around 450K (Volvos have non-interference engines .

I've run belts in my Minis for the 25 odd years... initially Pirelli now Gates. I generally change them whenever there's some reason to pull the engine. I have never had a belt come out that looked anything but pristine...

These days they're not quite as cheap as they used to be so this time I have left the current MM belt alone.. We'll see

Cheers, Ian

Fiat 124AC & 125A belts (also were Pirelli) are lifed at 80,000 miles, they go BANG (lose teeth) @ 100,000 miles. As I found out. It took out 7 valves and 7 valve guides... the pistons were all fine.

[edit] Nobody knows how long a Dayco/Pirelli Mini timing belt lasts, the belt makers don't tell you, and being made in Italy, these Triger belt drive kits were not a production fitted part (unless Innos ever got them, which I dunno) so BMC/BL/Rover can't tell you either.
As I said before, I changed one at 40,000 miles and it looked perfect. I have another Dayco that's done 25,000 and looks the same.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

I just got 2 over in my order from minispares and they are Dayco ISORAN,made in EEC. They are a stock line for them!

Its interesting that the world has turned and new cars have gone back to chains...

They're much better designed these days I am told.

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SooperDooperMiniCooperExpertEngineering

All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.

Apart from the early GM Alloytec V6 in which the chain was under-designed. I think newer motors are OK though.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Try this

X is a variable or place holder replace it with what you want the belt made of as I said in my post.