|
|||||||||||
|
|||||||||||
30 Oct 2007, 17:59 (Ref:2055189) | #1 | |
Veteran
Join Date: Oct 2005
Posts: 1,368
|
App k Cortina
Quick question, what size tyres should a LC run? Should the fronts be smaller, ie thinner?
|
|
|
30 Oct 2007, 21:14 (Ref:2055370) | #2 | ||
Rookie
Join Date: Aug 2006
Posts: 62
|
Quick answer: every size that fits on 5.5J x13 rims................Normally LC's use 5.25 x 13 rear and 4.50 x 13 in front some uses 5.25 x 13 in front also.
|
||
|
1 Nov 2007, 09:53 (Ref:2056672) | #3 | |
Veteran
Join Date: Apr 2002
Posts: 9,718
|
they fit on 6J rims as well Hugo
I've always run 5.25 rear and 4.50 front, 5.25's have been seen on some fronts but I don't think they help much and you need to modify panelwork which isn't strictly speaking legal. most other GT's I've seen have had 4.50's on the rear . . .a quick easy way of changing your final drive ratio ! |
|
|
1 Nov 2007, 17:41 (Ref:2057069) | #4 | |
Veteran
Join Date: Oct 2005
Posts: 1,368
|
Thanks chaps Lookout for another LC on track next year
|
|
|
1 Nov 2007, 18:21 (Ref:2057110) | #5 | ||
Veteran
Join Date: Sep 2006
Posts: 12,853
|
Fuel too expensive in the Mustang Moose?
|
||
__________________
Living the dream,Chief instruktor and racing on the worlds best circuits-The Nordschleife and Spa.Getting to drive the worlds best cars-someone has to do it, so glad its me. |
1 Nov 2007, 18:45 (Ref:2057127) | #6 | |
Veteran
Join Date: Apr 2002
Posts: 9,718
|
soon will be, although 8-9mpg is as good as it gets in a twink if you don't want me breathing on your rear lamp bezels
|
|
|
1 Nov 2007, 22:10 (Ref:2057275) | #7 | ||
Veteran
Join Date: Sep 2006
Posts: 12,853
|
You on an economy drive Zef,I,ll,normally get 7,mind you,that is pushing it a bit.
|
||
__________________
Living the dream,Chief instruktor and racing on the worlds best circuits-The Nordschleife and Spa.Getting to drive the worlds best cars-someone has to do it, so glad its me. |
1 Nov 2007, 22:33 (Ref:2057286) | #8 | |
Veteran
Join Date: Oct 2005
Posts: 1,368
|
Terence...........nah, tis not me, someone I know is building 2 at the same time 1 Appk and 1......errrrr, not Appk
Tried to convince him to get a Mustang, but he mumbled something about there being too many V8's Well 2 more Cortinas should even the grid a little more |
|
|
2 Nov 2007, 06:52 (Ref:2057453) | #9 | ||
Veteran
Join Date: Sep 2006
Posts: 12,853
|
Bless you my son,for it would seem we have another convert amongst us
|
||
__________________
Living the dream,Chief instruktor and racing on the worlds best circuits-The Nordschleife and Spa.Getting to drive the worlds best cars-someone has to do it, so glad its me. |
2 Nov 2007, 10:14 (Ref:2057585) | #10 | |||
Rookie
Join Date: Aug 2006
Posts: 62
|
Quote:
Just got new rims and tires under the car 5.25 rear 4.50 front and now rebuilding the diff to 4.44 Will meet you some time some place next year during an event. It would be nice to do Spa together with Henrik from Danmark. |
|||
|
2 Nov 2007, 10:24 (Ref:2057591) | #11 | |
Veteran
Join Date: Apr 2002
Posts: 9,718
|
all 3 GT's in the Northern hemisphere racing together . . . you couldn't make it up
6" rears are Goodwood rims . . . my little check to see if the scrutes where up to scratch! unfortunately as everyone else uses them it didn't show up!!! |
|
|
4 Nov 2007, 16:22 (Ref:2059363) | #12 | ||
Racer
Join Date: Jan 2002
Posts: 245
|
I´m in for the Spa next year, 6 hours in the Cortina GT. It would be the thing to do in 2008.
But 6" rims, that is naughty. I am very strick with App.K regulation, as you know Joe. I really don´t care if the original doorlining or seats is there, as pr.Goodwood, but the technicals, must not be questioned. |
||
|
4 Nov 2007, 18:22 (Ref:2059425) | #13 | |
Veteran
Join Date: Apr 2002
Posts: 9,718
|
there are 4" rims on now, and I've red dotted myself !
|
|
|
4 Nov 2007, 18:42 (Ref:2059446) | #14 | ||
Racer
Join Date: Jan 2002
Posts: 245
|
Isn´t that going over, you should not punish yourself like that, 5½ rims will do, and if we are going to Spa 6 hours, it should be 5½ rims, just for our comfort. Wouldn´t you agree?
|
||
|
4 Nov 2007, 19:49 (Ref:2059516) | #15 | |||
Rookie
Join Date: Aug 2006
Posts: 62
|
Quote:
|
|||
|
4 Nov 2007, 22:44 (Ref:2059656) | #16 | |||
Veteran
Join Date: Sep 2006
Posts: 12,853
|
Quote:
It could be Measles Zef. |
|||
__________________
Living the dream,Chief instruktor and racing on the worlds best circuits-The Nordschleife and Spa.Getting to drive the worlds best cars-someone has to do it, so glad its me. |
16 Mar 2008, 15:10 (Ref:2153750) | #17 | |||
Rookie
Join Date: Mar 2008
Posts: 31
|
Quote:
I'm a beginner at racing a '65 Cortina GT and lack a lot of knowledge! Hope you can help. Bye, Leo |
|||
|
16 Mar 2008, 17:12 (Ref:2153843) | #18 | ||
Veteran
Join Date: Sep 2006
Posts: 12,853
|
It would probably work out at 165.70.13 front and 185.70.13 rear see-ing that the Dunlop Historics are an 80 series,this will obviously change the drive ratio.
|
||
__________________
Living the dream,Chief instruktor and racing on the worlds best circuits-The Nordschleife and Spa.Getting to drive the worlds best cars-someone has to do it, so glad its me. |
16 Mar 2008, 20:30 (Ref:2154076) | #19 | ||
Rookie
Join Date: Mar 2008
Posts: 31
|
Thanks, Terence. I'm not too worried about the drive ratio yet, first we need to get some balance in the handling. Different size tyres may help.
Looking in the Dunlop 'Vintage car race tyres' list, I see 4.50 M13 CR65 204 and 5.25 M13 CR65 204. Are these the ones to order? |
||
|
16 Mar 2008, 21:25 (Ref:2154130) | #20 | |
Veteran
Join Date: Apr 2002
Posts: 9,718
|
yes, they are, roughly speaking they're 175/60 or 70 on the front and 185 60 ish on the back, but they roll around and change
I run 175/70 radials on the road cars it looks right and feels right, and toyos at £25 from my freindly local tyre dude is a darn sight cheaper than dunlops ! |
|
|
16 Mar 2008, 23:15 (Ref:2154234) | #21 | ||
Veteran
Join Date: Sep 2006
Posts: 12,853
|
Only probs there is if they are used in FIA events,60 series are not allowed ,are they?
|
||
__________________
Living the dream,Chief instruktor and racing on the worlds best circuits-The Nordschleife and Spa.Getting to drive the worlds best cars-someone has to do it, so glad its me. |
17 Mar 2008, 00:01 (Ref:2154261) | #22 | ||
Rookie
Join Date: Mar 2008
Posts: 31
|
These were the sizes mentioned in a list sent by the organizers of the Dutch Championship so it must be okay. I don't think we have a choice either.
Last weekend the car had cheapo 175/70 tyres on all wheels for practice and the oversteer was frightening. Felt like the rears had no lateral grip at all. I really hope that Dunlops in different sizes wil make a difference. I dread the thought of going into Eau Rouge in a few weeks time with the car behaving like it did last week. |
||
|
17 Mar 2008, 07:53 (Ref:2154420) | #23 | ||
Veteran
Join Date: Apr 2002
Posts: 9,718
|
Quote:
TB, the profile mentioned was a reference, road car tyres are not racing tyres, and I can't afford Dunlops on the road car . . . |
||
|
17 Mar 2008, 08:03 (Ref:2154430) | #24 | |||
Veteran
Join Date: Sep 2006
Posts: 12,853
|
Quote:
The Dunlops will be a lot better than road tyres,as Zef has given the tyre sizes to run ,you should really enjoy them.Have fun!. |
|||
__________________
Living the dream,Chief instruktor and racing on the worlds best circuits-The Nordschleife and Spa.Getting to drive the worlds best cars-someone has to do it, so glad its me. |
17 Mar 2008, 10:28 (Ref:2154533) | #25 | |||
Veteran
Join Date: Apr 2007
Posts: 2,820
|
Quote:
|
|||
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Broadspeed Mk2 Cortina | ian.stewart | Motorsport History | 29 | 19 Jan 2013 16:43 |
Lotus Cortina (merged with Alan Mann Lotus Cortina) | stein johnsen | Motorsport History | 44 | 27 Mar 2006 07:27 |
Cortina GT500 | zefarelly | Motorsport History | 7 | 7 Mar 2006 03:13 |
Need help: Modsports Cortina | reynard | Historic Racing Today | 10 | 2 Nov 2005 14:35 |
Mk 1 Cortina | lotus | Motorsport History | 14 | 13 Apr 2005 09:09 |