Since I have just rescently joined the list, but have had a TR4 for over 12
years I have a ton of various questions. Since this topic came up I decided
to throw out this old question of mine. Before I put my TR4 away for storage
(7 years ago last week) I used to have extreme!! understeer. I had new
Remington (not the greatest tires, but good for normal use)205 60 15 tires
on tr6 wheels mounted to it. The TR4 is 1964 (ct20347L) with no front or
rear swaybar. I used to be able to at any speed above 30mph crank the wheel
very hard, and get the car to go in a front wheel plow. eventually the car
would turn, but it was always a source of fear for the unknowing occupant.
Do other TR4s have this severe understeer problem? I have new springs I
bought from moss(semi race) that I have not yet put in. I have heard a lot
of horror stories about aftermarket springs. I really want to make my car
into a super good handler. Anyone have any ideas on TR4 handling? I have a
perverse fantasy of eventually doing 1.00G in a skidpad test with my TR4.
Op
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----- Original Message -----
From: Brian Johnson <b.johnson@diamond.co.uk>
To: Tony Rhodes <ARhodes@compuserve.com>; Triumph list
<triumphs@autox.team.net>
Sent: Saturday, May 22, 1999 8:51 AM
Subject: Re: TR4A front spring packing pieces
>
>Tony
>
>I thought about using the road/rally springs on the rear of my TR4, but
>after my experience with the TR2 (the first time around) when I bought
>some 'half race' springs
>because no others were available, when one on the TR2 was broken. What
>this did was to give me severe oversteer - I could frighten even the
>hardiest passenger, and several people would not come in the car. I got
>used to it of course, but it was dangerous.
>When I got the TR2 back three years ago I took off the springs and they
>were the dished
>variety. I think that they should have been the flattened type - there
>was no information when I fitted them (1973) about what you could and
>could not do with rear springs.
>
>I'm happy to say that by using the blue springs on the front of my TR4
>and 'normal' but new rear springs (the dished type) plus a front
>anti-roll bar (sway bar) I get fairly neutral handling and can only get
>understeer in the wet when I am really trying (after the TR2 I prefer
>oversteer - cos I know what to do about it !)
>
>The Moss tuning manual describes the rear spring selection for IRS cars
>as a
>'minefield' There are several options, and they say you should fit the
>springs to the car and then take measurements to find if you have
>achieved the desired effect. I suppose the problem is that if the
>springs are not correct then you have to swap them somehow. I could
>have a go at scanning the page if you like so that you can see what
>springs are available. Its small print so it may be difficult but I can
>have a try if my scanner will work (I've not used it for at least 3
>months)
>
>Brian
>
>Tony Rhodes wrote:
>>
>> Message text written by INTERNET:b.johnson@diamond.co.uk
>> >Yes I used the spacers - they are effectively around 1 1/2 inches
>> thick. I have the same for my TR2 which is dismantled at the moment.
>> If I get a chance tomorrow, I will measure one for you
>> I have the Moss performance manual in front of me - there is no spacer
>> in the TR4A diagram and the blue spring is part TT4006. The diagram
>> for the TR2-4 shows the spacer (part #107682) and the same blue spring
>> is used - it is called the ROAD-RALLY spring and rated at 390 pounds. <
>>
>> Brian,
>>
>> That is very interesting. Thank you. You used the spacers with the blue
springs
>> on the front. Did you use "road-rally" springs on the rear as well? I
presume
>> so. Did you need to use spacers in the rear to get the ride height you
were
>> looking for? Or did you have to use spacers in the front to bring it up
to
>> level with the rear?
>>
>> I presume that there is no difference in the overall height of the shock
tower
>> in the 4 vs 4A to eliminate the spacer in the 4A. It seems that the
11.1" stock
>> spring was what eliminated the spacer for any 4/4A series car. The
factory manual
>> is quite murky on this....
>>
>> -Tony
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