Modification to a mgb gt

Modification to a mgb gt

Author
Discussion

MG CHRIS

Original Poster:

9,149 posts

173 months

Friday 11th June 2010
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I have a 1979 mgb gt which we have taken the heavy bumpers off and fiited sebring rear valance and the le front splitter with round indicators sat back where the old ones were fiited. The only problem know is it sits way to high and has the original wheels. We were talking about lowering it but someone said it would be unusual if you fitted bigger wheels ie 16 or 17 inch possibly of the zs range. Would that be possible or are there any problems in doing so or can you use other wheels of different cars. Or should we just lower it at fit minilites instead but i do like it to look different from ordinary mgb as from last year the car was in 5 different colours we have had loads of people asking about it. Any suggestion would be brilliant.

rolandmgb

28 posts

172 months

Saturday 26th June 2010
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There is a kit available to lower the suspension. Its usually used when a rubber bumper car is converted to a chrome bumper

Poledriver

28,765 posts

200 months

Saturday 26th June 2010
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One of the problems the MGB suffered from when they introduced the rubber bumper version was loss of handling!
Fit the conversion kit, lower it and enjoy the corners! smile

neilr

1,527 posts

269 months

Wednesday 30th June 2010
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I had issues fitting 15" minilights to my '72 bgt after it had been lowered (185/65 rubber) which caused issues fouling the rear arch edges. I went with the 14" minilights in the end. Despite what i was told by the garage who sold me them I think the offset is incorrect on the 15" minilight type wheels that are sold for B's. If you look on the Moss website there is a disclaimer of sorts about these size wheels and tyre sizes that almost admits as much. You pays your money i guess.

15" might well work with an unlowered rubber bumper car though car (i still have them if your intereted, no more than 70 miles on them if yo want to mak eme an offer) but TBH, your better off lowering it. Fit a 7/8 ARB while your at it, makes a huge difference.

neil

MG CHRIS

Original Poster:

9,149 posts

173 months

Friday 2nd July 2010
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I got the car back to day after having my mates car in the garage to be resprayed so i will do some measuring and see what we can fit on there. Where are you from anyway if it localish than i might make you an offer im from blackwood south wales.

llohcins

32 posts

174 months

Friday 9th July 2010
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can i ask, has removing the bumpers made a decent difference? i have a 1979 as well and am considering getting the sebring front and rear.

MG CHRIS

Original Poster:

9,149 posts

173 months

Friday 9th July 2010
quotequote all
Its more cosmetic than performance it does reduce the weight by 50-60kg but it doesnt really help handling a lot but if you want it to look different then thats the way to go i try to get a photo of it up so you can see how it looks but the back can take a lot of time to get right using filler and fiber glass to get the back smooth but it does look a lot better without the bumpers

300bhp/ton

41,030 posts

196 months

Thursday 15th July 2010
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MG CHRIS said:
I have a 1979 mgb gt

We were talking about lowering it but someone said it would be unusual if you fitted bigger wheels ie 16 or 17 inch possibly of the zs range.
Do you mean the Rover 400/MG ZS? Pretty sure its a different PCD.

MG CHRIS

Original Poster:

9,149 posts

173 months

Thursday 15th July 2010
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Yes we are

mgbgtt

2 posts

171 months

Friday 23rd July 2010
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Hi,

I've had Rover 820 Vitesse wheels on an MGB GT, Tyres were 195/55/16 and I needed 19mm spacers on the rear and 15mm on the front to centre the tyres in the wheel wells. Also I used Ford metric studs allowing the original Rover nuts to be used.
The rear clearance was ok on passenger side but drivers side rubbed, not sure if the shell was suffering previous accident damage, or if it had ben made that way?

I never really liked the look of a modern wheel on the car.

Rover 600 and 800 are the same PCD, 100, 200 and 400s are different.....

Regards,
Ian

Kentish

15,169 posts

240 months

Wednesday 28th July 2010
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Wheels from later cars will look awful on an MGB.

The rostyles, wires or minilites are the best wheel for the B.

danger mouse

3,828 posts

267 months

Friday 30th July 2010
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Modern wheels to fit the 'B' are a bit thin on the ground.

There is an american site which lists other cars which share the 4x4 1/2" PCD which is ok if you want to dredge for scrap steelies.

http://www.britishcarforum.com/bcforum/ubbthreads....
http://www.kewengineering.co.uk/upgrades4mgs/Drive...

As far as alloys are concerned, as said above, look for 4 stud Rover 800's and 600's or classic stuff on eBay.

I went the second route and found some 15" Slot-mag style Shelby Cal's so I could use modern 15" tyres now the standard 14"'s are becoming a pest to source cheaply.
I still have plenty of sidewall with 15"'s so 16" or 17"er's are deffinately doable, but I reckon would very harsh down the road as MG B's run fairly low tyre pressures and this would be countered by stiff side walled low-profiles.

Just my opionion though. smile



The biggest issue you will have with any wheels is offsets. I was put off the modern Rover wheels because the are basically FWD wheels and will need spacers which scare the sh!t out of me.

Fortunately my wheels came from a TR6 who's offset is only sightly more outboard (can never remember which is positive or negative) but even only going up from standard 165 to 195 section tyres I still suffered rubbing at the back. There's shed loads of space inboard but the outside of the tyres will rub the arches. Flaring them solved it and does look cool, but do it before painting!

Having said that mine is a chrome bumper car that sits very low, so it might not be so bad for you unless you slam it to get some handling... which you should!

wink

Mouse

dirty boy

14,738 posts

215 months

Wednesday 4th August 2010
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Minilites or are they Compomotives ? My old man has them on his MGs, look perfect.