• The Roadster Factory Recovery Fund - Friends, as you may have heard, The Roadster Factory, a respected British Car Parts business in PA, suffered a total loss in a fire on Christmas Day. Read about it, discuss or ask questions >> HERE. The Triumph Register of America is sponsoring a fund raiser to help TRF get back on their feet. If you can help, vist >> their GoFundMe page.
  • Hey there Guest!
    If you enjoy BCF and find our forum a useful resource, if you appreciate not having ads pop up all over the place and you want to ensure we can stay online - Please consider supporting with an "optional" low-cost annual subscription.
    **Upgrade Now**
    (PS: Subscribers don't see this UGLY banner)
Tips
Tips

TR2/3/3A 3A Rear body sag?

karls59tr

Obi Wan
Country flag
Offline
Car is a mechanically sound daily driver and rolling resto.I never wanted to take it off the road because it was too much fun driving it. I noticed the rear of the car is sagging on the right side and the wheel arch is closer to the tire than it should be.At first I thought the issue might be the leaf spring but it does not appear to be broken.
As a "temporary" fix I put a 1&1/2" piece of solid rubber between the frame and body near the body to chassis bracket to raise the body up to where it should be. I removed the outer sill and it seems that the bottom few inches of the "B" post are rotted out which I suspect is causing the problem? Does this make sense? Anyone know what the correct height should be from the ground to the outer sill for when I repair the B post? Any thoughts.
PS The outriggers appear to still be functional.
 

charleyf

Luke Skywalker
Country flag
Offline
Your wanting the distance from the ground to the outer sill is not what you need. It is a bit more complicated than that. The B post sits on top of the sill as you likely already know. I am guessing that your sill may be rotted out as well. That is usually where the B post rots from. So you need something to weld the B post onto that is solid. The B post is about double the thickness of the sill.
What I used was the door to determine the proper height of the B post on the sill. If your A post is in good condition then your door should be fitting the dash and front fender curves fairly well. I am also suspecting that the closing line between the B post and the rear of the door is close at the bottom and very wide or at least wider at the top of the door. To get the rear of the car back into alignment you can use the alignment of the rear of the door. Most people use a brace in the door opening to hold the front and rear parts of the car in place while doing this operation. I am not to sure that your car is still in good enough alignment to be able to start from there. If the rest of your sill and the inner floors are in good condition they will help to keep the alignment in place. But don't rely only on them being there to do that. Some sort of bracing is needed. What you are looking for is to have the closing line between the rear of the door and the B post to be the same width top and bottom and appropriate distance to allow the door to close. The top of the door the should be even with any lines like the curve near the top of the door. You will see what I mean when you put the door up to the outer body portion of the B post area.
I am sure that other forum users will chime in with a lot more advice. Maybe even an easy way to do all of this. I always find the hard way first.
Charley
 

Geo Hahn

Yoda
Country flag
Offline
FWIW - The top leaf of my right hand spring had a break but no sag was apparent. The one day the sag got much worse. Once I took the spring off I found I had a couple more broken leaves that I could not see when it was all together. So -- maybe it is the issue you mention or maybe it is a break you can't see.

BTW, the replacement of the spring was much easier than I had expected.
 

CJD

Yoda
Country flag
Offline
Personally, I don't think the b post is causing the rear corner to sag. There is another mount at the rear corners, so your body would have to be rotted through many places to drop the corner.

Measure off your frame to the ground at the corners. That will give you an idea whether it's suspension, frame, body, or multiple problems...
 
OP
K

karls59tr

Obi Wan
Country flag
Offline
CjD...good idea I'll take those measurements before proceeding.
Geo Hahn...I'm going to have a better look at the spring for breaks.
Jarleyf....I'll have a look at the inner sill....thanks for the advice on working with door alignment.
 

TRTEL

Jedi Trainee
Offline
I would add, take a look at the measurements on pages 5 & 6 of the factory manual with the side view of the TR2. While it is not an accurate mechanical drawing ( though a number in the book are, but this one's off +or- 5% so don't use a caliper on it) the measurements listed are correct (check thrice, weld once). It does show the top of the rear 5.60 tire lining up with the edge of the rear fender. Although there are a few minor errors elsewhere, it's a good starting point. And I agree with possible multiple leaves in a broken spring, replaced a number of them.
 
OP
K

karls59tr

Obi Wan
Country flag
Offline
In regard to broken leaf springs if I wire brush the corrosion off the leaves would I see hairline cracks when looking at the sides or do I need to take the spring pack apart to see actual breaks?
Also if the rear hydraulic shock failed internally would that cause a 1&1/2" sag?
 

Geo Hahn

Yoda
Country flag
Offline
Karl - I didn't look for more breaks before I removed the spring so I can't say how easily they would have been spotted on those middle leaves that are well clamped but worth a try.

On mine I think the top spring had been broken awhile and that stressed things enough that others finally failed. A bad shock would probably add to that stress.

You might compare the shape of the laden spring on the sagged side to the one on the laden side to see if there is a difference. As I recall, a laden spring is almost flat, a broken spring may be bowed beyond flat.
 

DougME

Senior Member
Country flag
Offline
My '64 3B seems to ride quite low in the rear on both sides with a very rough ride. If one doesn't use correct tires the body height measurements will not match factory specs. I measured from the top of the rear fender arch to the center of the wheel hub, mine was 13 3/8". Do springs wear out / weaken ? I haven't made a close examination for cracks in the springs yet. Any thoughts (yes, I know, careful examination first) ?
 

Geo Hahn

Yoda
Country flag
Offline
...I measured from the top of the rear fender arch to the center of the wheel hub, mine was 13 3/8".

FWIW - my TR3A measures (unladen) 13" on the drivers side and 12¾" passenger side. Probably about level with big me behind the wheel. Doesn't seem low to me.

Nexen_zpse0bfb6fe.jpg
 

Simmo

Jedi Hopeful
Country flag
Offline
I have a simular problem.
I have put new springs in and that didn't solve it.
Put a 3/8 piece of steel under the passengers side spring to lower one side and that helped cheat the situation but it is still drooping about 1/2" on the drivers side. I am thinking that sitting in the garage for many weeks at a time is letting the springs settle and therefore I am noticing the droop much more.
The body is sound with no rust
 
OP
K

karls59tr

Obi Wan
Country flag
Offline
With new Moss rear shocks and springs I'm getting 13" on pass side and 12 5/8" on driver's side....this is with the 3/8" plate installed on pass side. I assume anywhere close to that vicinity is pretty much normal.:eagerness:
 
Similar threads
Thread starter Title Forum Replies Date
Lotuswins Wanted TR4 H6 rear carb body Triumph Classifieds 4
Jim_Stevens TR2/3/3A Rear fender stays: black or body color? Triumph 8
K TR2/3/3A What is the distance from the rear overider to the body....... Triumph 3
GBRandy TR6 1973 TR6 Rear Frame / Body Bushings Triumph 3
K TR2/3/3A TR3 rear overider distance from body? Triumph 3
M_Pied_Lourd TR2/3/3A TR3A Rear Body Mount/Spare Tire Compartment Repair Triumph 42
hondo402000 TR6 TR6 rear body Black paint help Triumph 9
M TR2/3/3A TR3 Rear Body Damage Triumph 9
abarth69 Square body sprite with Bugeye rear bumpers Spridgets 14
R Body Rear View Mirrors Austin Healey 3
TR6oldtimer TR6 TR6 rear body shims [under trunk] what is ok? Triumph 2
tahoe healey body-rear Austin Healey 9
petnatcar Rear View Mirror Relocation Austin Healey 0
Carlbanan56 MGB Rear axel torque? MG 4
petnatcar Rear View Mirror Relocation Austin Healey 0
trbby2 TR4/4A TR4A Intermittent rear wheel locking? Triumph 19
Carlbanan56 MGB Rear wheelbearing clicking MG 8
Carlbanan56 MGB MGB rear break rebuild MG 6
B BJ8 Rear Backrest Hinges Austin Healey 4
F For Sale E Type Series II front and rear bumpers good condition Jaguar Classifieds 0
bigjones TR2/3/3A Rear tail light not budging Triumph 5
5 Wanted Wanted 1966 mgb banjo type axle rear hub MG Classifieds 0
scottkilpatrick TR4/4A TR4 Rear Brake Drum Removal - Basic Question Triumph 16
J TR2/3/3A TR2 Fitting/mounting rear wing Triumph 11
Michael Oritt Rear Crank Seal Kit Austin Healey 7
BT7 Owner Rear Crankshaft Bearing Cap Austin Healey 4
O Jaguar rear window trim repair Jaguar 1
Joel Lester TR2/3/3A Is "later" style rear view mirror taller than the "early" style? Triumph 6
S Leaking HD6 Rear Carb Austin Healey 10
B Rear Brake Cylinders Austin Healey 4
WHT BJ8 Rear Seat Surround Drain Tube Grommets Austin Healey 0
Joel Lester TR2/3/3A Do rear leaf springs wear out? Triumph 11
J TR2/3/3A Rear Fuel Line Clips Triumph 3
apbos New long term project. Sprite powered rear engined race car. Spridgets 9
60BN7 Rear Wheel Opening Austin Healey 9
glemon TR5/TR250 Answering My Own Question Rear Tube Shock Conversion Numbers TR4a-TR6 Triumph 0
S TR2/3/3A rear wheel cylinder Triumph 1
K TR2/3/3A Rear tire pressure when there is an anti roll bar at the front of the car? Triumph 1
T Rear/Differential "Clunk" Austin Healey 2
AUSMHLY BJ8 Rear Seat Squab Austin Healey 0
jfarris For Sale TR3 Rear Sway Bar Triumph Classifieds 0
J 3000 Rear Seats Austin Healey 6
KVH General TR Rear Brake Shoe Orientation Triumph 12
Popeye TR4/4A Rear fender attachment: wing to lamp housing clip? Triumph 7
KVH General Tech Rear Brakes and Solid Axle Triumph 2
P Rear Springs Austin Healey 2
K TR2/3/3A Rear leaf spring brass and Delrin bushings ? Triumph 4
KVH General Tech Jacking Up The Rear of TR4 Triumph 5
J Rear Main Seal Kit Austin Healey 1
af3683 TR2/3/3A TR-2 / TR-3 Rear Bumper Wrap Around Fender Guards Identification Triumph 0

Similar threads

Top