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This is a question about modifying an MGB in England. I am looking to do an engine swap which will also include a gearbox swap and probably easier to then a rear diff swap to cope with the power. Can somebody tell me at what point the garage at the MOT time will say this needs an SVA test or similar as I have changed to much. So what I am asking is how much can I change of the MGB and still keep its V5c and tax free status? As I have been told things have changed over recent years but I cannot seem to find a definitive answer. cheers
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kevfromwales
Posted a lot
the conrod's REALLY out the block now!
Posts: 3,909
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You need 8 points, 5 for the unmodified shell And then your choice of any of the following 1 for engine 2 gearbox 2 steering 2 suspension 2 axles So engine and box and even a whole back axle is fine. Theres no real need to worry, eslecially ss the diff would be the original one, wouldnt it?
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Almost on the road: b11 sunny breadvan, e36 tds, 325i skidcar,
nearly there: ford f250 tathauler, suzuki alto, u11 bluey
not for a while: ford pop, 32 rails,
not in this lifetime: ruby, '29 hillman
''unfortanatly I'm quite old and scruffy and in need of some loving. my drive shaft needs a new boot....''
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EmDee
Club Retro Rides Member
Committer of Autrocities.
Posts: 5,932
Club RR Member Number: 108
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MOT's and SVA informationEmDee
@emdee
Club Retro Rides Member 108
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Your vehicle must have 8 or more points from the table below if you want to keep the original registration number. 5 of these points must come from having the original or new and unmodified chassis, monocoque bodyshell or frame.
Part Points Chassis, monocoque bodyshell (body and chassis as one unit) or frame - original or new and unmodified (direct from manufacturer) 5 Suspension (front and back) - original 2 Axles (both) - original 2 Transmission - original 2 Steering assembly - original 2 Engine - original 1
edit - DoH! beaten to it Well played Kev, well played.
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Last Edit: Apr 6, 2015 19:29:16 GMT by EmDee
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cheers guys, would altering the gearbox tunnel to make larger count as modifying the shell?
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You need 8 points, 5 for the unmodified shell And then your choice of any of the following 1 for engine 2 gearbox 2 steering 2 suspension 2 axles So engine and box and even a whole back axle is fine. Theres no real need to worry, eslecially ss the diff would be the original one, wouldnt it? So it stands to reason that if you keep the car standard but roof chop it say, or modify the body, it doesnt need an SVA? Not planning to, just interested in how that points system works!
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As soon as you modify the main structure (monocoque or chassis) you're straight into an IVA/BIVA. You need to keep the main 5 points of the core structure intact and unmodified. As soon as you modify the core structure, you lose all 5 points and these are essential to the 8 points, you can't make 8 point up from the other parts of the car.
It's basically 5 points for the core and a minimum of 3 points from elsewhere.
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You need 8 points, 5 for the unmodified shell and then your choice of any of the following... So it stands to reason that if you keep the car standard but roof chop it say, or modify the body, it doesnt need an SVA? just interested in how that points system works! cheers guys, would altering the gearbox tunnel to make larger count as modifying the shell? I've not been involved, but everything I've read quotes "unmodified shell" - and chopping the roof or chopping the bulkhead/trans tunnel is a modification. * According to the rules, real-world folk may be able to advise other options.
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This may sound daft, but where it says original, does this mean original to that spec car or original to the model range, for example swapping a 4 speed box for a 5 speed from the same model does this lose a point, here's another, swapping a sierra drum rear axle for a rear disc axle does this lose points?
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As soon as you modify the main structure (monocoque or chassis) you're straight into an IVA/BIVA. You need to keep the main 5 points of the core structure intact and unmodified. As soon as you modify the core structure, you lose all 5 points and these are essential to the 8 points, you can't make 8 point up from the other parts of the car. It's basically 5 points for the core and a minimum of 3 points from elsewhere. Gotcha!
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doobie
Part of things
Posts: 271
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This may sound daft, but where it says original, does this mean original to that spec car or original to the model range, for example swapping a 4 speed box for a 5 speed from the same model does this lose a point, here's another, swapping a sierra drum rear axle for a rear disc axle does this lose points? This is where you get into "every modification will be judged on its own merits" DVLA speak for we don't know.... Gearbox probably... axle no as brakes are not included..... If you really want an awkward one then ask if you can replace a fwd rear floor in lets say a B3 Passat (other cars are available) for a 4wd one and then make it rwd.....
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For the passat wouldn't that be modifying the monocoque?
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MrSpeedy
East Midlands
www.vintagediesels.co.uk
Posts: 4,789
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This may sound daft, but where it says original, does this mean original to that spec car or original to the model range, for example swapping a 4 speed box for a 5 speed from the same model does this lose a point, here's another, swapping a sierra drum rear axle for a rear disc axle does this lose points? This is where you get into "every modification will be judged on its own merits" DVLA speak for we don't know.... Gearbox probably... axle no as brakes are not included..... If you really want an awkward one then ask if you can replace a fwd rear floor in lets say a B3 Passat (other cars are available) for a 4wd one and then make it rwd..... That would be a modified chassis/monocoque anyways, so you're straight into IVA territory. Nothing awkward or ambiguous about that at all!
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Raoul Duke
Part of things
Posts: 990
Club RR Member Number: 117
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MOT's and SVA informationRaoul Duke
@raoulduke
Club Retro Rides Member 117
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If you're replacing part of the shell/chassis with an original, factory-spec part, that's not necessarily 'modification'. Otherwise every restoration job with new structural metal would need an IVA.
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...a redder shade of neck on a whiter shade of trash...
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fogey
Posted a lot
Posts: 1,614
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If you're replacing part of the shell/chassis with an original, factory-spec part, that's not necessarily 'modification'. Otherwise every restoration job with new structural metal would need an IVA. Yes it is, because you are modifying one shell to be like another shell, albeit both from the same factory. Be difficult to tell though . . .
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mylittletony
Posted a lot
Posts: 2,392
Club RR Member Number: 84
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MOT's and SVA informationmylittletony
@mylittletony
Club Retro Rides Member 84
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"Sorry inspector, no fwd rear floor repair sections were available, so I had to buy a 4wd repair section"
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"Sorry inspector, no fwd rear floor repair sections were available, so I had to buy a 4wd repair section" Then 30 second later inspector find hundreds of fwd floor repair sections via Google ?
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<devil's advocate> Were is not the same as are </da> *n
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Top grammar tips! Bought = purchased. Brought = relocated Lose = misplace/opposite of win. Loose = your mum
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bstardchild
Club Retro Rides Member
Posts: 14,937
Club RR Member Number: 71
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MOT's and SVA informationbstardchild
@bstardchild
Club Retro Rides Member 71
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cheers guys, would altering the gearbox tunnel to make larger count as modifying the shell? Is the original tunnel rusty and needing repairs?
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Raoul Duke
Part of things
Posts: 990
Club RR Member Number: 117
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MOT's and SVA informationRaoul Duke
@raoulduke
Club Retro Rides Member 117
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cheers guys, would altering the gearbox tunnel to make larger count as modifying the shell? Is the original tunnel rusty and needing repairs? ** sleeper runs to the garage with a tin of Nitromors and a lump hammer **
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...a redder shade of neck on a whiter shade of trash...
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mikeymk
Part of things
'85 Polo Coupe S 1.6 16v
Posts: 931
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1983 Cavalier 1.6L
2.6 V6 Vectra engine, brakes, hubs 3.0d Insignia gearbox Astra 2.0d driveshafts
Body, rear axle, steering are stock
Theoretically, this car has eight points, and is in the clear..?
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