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Post by shady on Nov 18, 2006 19:05:39 GMT 12
i was wondering if there was a bigger tyre than the 185/70 i need the taller tyre because my car revs out half way down the straight..
any help would be taking with thanks
cheers shady ...11a ministock
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Post by Deleted on Nov 18, 2006 21:42:37 GMT 12
Yes you can get a tyre called a 185R13
(which is pretty much equivalent to a 185/80R13, they just dont call it that for some reason)
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Post by porry41 on Nov 19, 2006 6:50:08 GMT 12
youve got a couple of options bigger tyres not going to solve your problem the 70 or 80 etc depicts how wide the tyre is in your case is this a new problem as that cars been around a little while now & is running a ke 70 diff you would be better to go to a higher diff ratio & then go for smaller tyres as those 185s in 13 & 14 inch are becoming obsolete now do you no what diff ratio you got & have you changed it latterly cheers
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Post by rick-taylor on Nov 19, 2006 7:44:01 GMT 12
Some clarification seems to be required:
If a tyre size was 185/70-13 the following applies:
Nominal Sectional Width = 185mm
Rim Diameter = 13"
Aspect Ratio = 70% (height of sidewall relative to sectional width)
Therefore- a 80 series tyre is taller than a 70 series etc...
However, Porry is right, you will only achieve minimal difference with tyre size in relation to your gearing, and the diff ratio may require changing.
Good luck.
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Post by shady on Nov 19, 2006 8:26:26 GMT 12
hey thanks guys il try the tyres but then if no or little change i will look at the diff gearing
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Post by Wiseowl on Nov 19, 2006 18:43:39 GMT 12
youve got a couple of options bigger tyres not going to solve your problem the 70 or 80 etc depicts how wide the tyre is in your case is this a new problem as that cars been around a little while now & is running a ke 70 diff you would be better to go to a higher diff ratio & then go for smaller tyres as those 185s in 13 & 14 inch are becoming obsolete now do you no what diff ratio you got & have you changed it latterly cheers Reading the rules... I would'nt have thought you could run a KE 70 Diff  ?/ What do the rules experts think !!!!!!!!!!!! |
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Post by Rusty on Nov 19, 2006 19:06:38 GMT 12
mmmmmmm passsss
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Post by porry41 on Nov 19, 2006 19:07:54 GMT 12
theres allways one ;D .but partly my fault ke 30 diff with ke 70 head .i supplied a brake drum backing plate & shoes a couple of weeks ago for this car does everyone run to the rule book soon as some one askes a simple question on here .maybe you should applie to scb an get a job which them there pretty short handed ;D
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Post by bigmac on Nov 20, 2006 10:27:00 GMT 12
Jeez Porry, have you run out of bourbon? Dont need the rule book to know that the running gear has to be from the same doner car model that the engine comes from. Rules are rules and all rules should be adheared to and policed the same.
Nothing wrong with pointing out the legalities so someone doesnt "accidentally" go breaking them.
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Post by porry41 on Nov 20, 2006 18:09:47 GMT 12
another no all  |
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Post by MattH on Nov 20, 2006 21:07:52 GMT 12
hmmm need to sit down over a dilmah to think about this one. We had a 195/70 he could have tried but apparently ther is a width limit , also if you go for a taller tyre more chance of it folding over and possibly causing a rollover and we wouldn't want that would we shady  |
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Post by porry41 on Nov 21, 2006 6:39:12 GMT 12
ok then mr mac & owl tell me what the difference is betreen a ke 20/30/ & 70 is ? ;D hic
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Post by bigmac on Nov 21, 2006 7:21:02 GMT 12
KE70 has 4K engine. Never ran 3K so cannot be used as a doner car. Also had Rack and pinion steering, a coil sprung diff and different front end. (lighter) From the rulebook "Donor cars are Datsun 1200, Datsun 120Y and Sunny 1200cc using A12 engine, or Toyota Corolla using 1200cc 3K engine," Also "All standard steering and steering box, struts, shocks, bottom arms, sway bar, ball joints, cross member, brakes, springs, engine and gear box mounts, rear axle and differential (differential may be locked), wheels, drive shaft and control pedals must be used. " I asume that would include the diff head. As we know with SNZ Rules if it doesnt say you can do it then assume you cant. Anyway Porry, whats caused you to have a bee in your bonnet. Sounds like a guilty concience  Im not a know all. Just like things to be fair for everyone and rules to be followed. Particularly ones pertaining to performance in a budget class. Surely you as a competitor could quote the rule book on the saloon section? |
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Post by ~HUGGIES34P~ on Nov 21, 2006 10:03:52 GMT 12
lets call DR Phill ;D ;D ;D
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Post by ben62w on Nov 21, 2006 14:28:58 GMT 12
hmmm need to sit down over a dilmah to think about this one. We had a 195/70 he could have tried but apparently ther is a width limit , also if you go for a taller tyre more chance of it folding over and possibly causing a rollover and we wouldn't want that would we shady I have 2 195s but dont run either of them at welly. i used to but found i did better runing smaller tyres. the 195s are wicked for palmy ;D. also if you run tubes you wont have the problem of tyres folding over..... heres a pic of mine doing it 2 seasons ago...(elevator music.....)....... ok i cant upload one at the mo but i will wen it works lol. heeeree we go.  |
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Post by porry41 on Nov 21, 2006 20:34:17 GMT 12
very good mr mac qouting from the rule book ke 70 had a 4k motor sure it also had a 5 speed gear box but my friend the ke70 sw has a leaf sprung rear end which is exactly the same as the ke 30 the ke 20 is also the same but has smaller drums & brakes all 3 diff heads are inter change able so who has a quilty consence in the past we have built 2 mini crocks along with many other types of speedway cars & your involvement in speedway is .................... ?
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Post by bigmac on Nov 22, 2006 7:24:02 GMT 12
Well Porry for the sake of common sense and being fair and realistic (and being able to admit if someone is correct)I will agree that if the S/W diff is interchangeable with the KE30 diff and as long as the KE30 or KE20 at some point ran the ratio head that he is wanting to use then it would fit into the rules. As for if anyone would actually check or whether the scrutiners would know may be a different story.
As for my involvement in speedway... Obviously not as long and noted career as yourself but having raced MiniStocks (different beast to a minicrock I believe) for 2 years quite successfully and now being in 2nd year racing Superstocks as well as building a ministock for my son, I do have a small amount of involvement.
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Post by thegreenhornet on Nov 25, 2006 12:46:31 GMT 12
Can back Big Mac up on that one Porry, he won the top points in Ministocks a couple of seasons back and is currently running a Rees built Toyota V8 Super Stock after last seasons Holden powered car Kuriger. One of the most helpful guys you will come across............. Lets keep the emotions down eh fellas, we're all paddling the same canoe  The Green Hornet ;D |
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Post by Sharns With Sparky on Nov 25, 2006 14:40:45 GMT 12
canoe is that wat im in |
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Post by Deleted on Dec 1, 2006 9:48:25 GMT 12
Just so everyone knows, and to answer basil on it, a 185R13 etc (any tyre that doesnt state the aspect ratio on the sidewall) has an aspect ratio of 82%. May as well be a 80 profile tyre, but if ya wanna get technical |
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?/
Im not a know all. Just like things to be fair for everyone and rules to be followed. Particularly ones pertaining to performance in a budget class. Surely you as a competitor could quote the rule book on the saloon section?
