Grantura mk IV 1800s restoration

[tvrsloth]

Starting restoration of my Grantura, have removed body and assessing chassis.

Rear differential is modified to take a Jag diff and is mounted on this bracket from the top only, the 3 points are bushed but I think it should be secured from the lower side as well, what do you think?



Also noted that the input drive for diff is offset to the right due to the design of the diff, i know the universal joints will allow for offset but should this be mounted to be as central as possible ink both planes.



I am missing few parts need to bonnet release mechanisms, fuel tank and rear lights so far.

[tvrsloth]

They had an option of a Jag or corvette diff fitted to the griffs when they were modified from grantura's so this should fit as it is a period diff.

The chassis here is a Griffith chassis I believe, I have the original chassis and rear diff but not sure whether to repair or use this one.

I need to look at a few other cars see what I am missing so if anyone has a griffith or grantura/vixen around the Midlands and happy for me to take few pics I would be grateful.


[quote=Everilda]Have a look here to see how a grantura diff is mounted http://www.nigelreubenracing.com/gallery.php towards the bottom
of the pictures./quote]

I like the modified race diffs Nigel has produced not sure how much they are but that might be an option.

[tvrsloth]

Hi Should my car have the recess for the lucas style number plate/reverse light or would it have had the smaller mgb style which has no reverse light on it?

thx Neil

[tvrsloth]

SONUS

Do you have link to your photobucket account images please, I would be interested to see how yours is mounted.

thx Neil

[tvrsloth]

Sonus said:

http://s1003.photobucket.com/user/ncnielsen/librar...

thx nice pics, yes see yours is offset the same, but i prefer your mount set up i am going to design new one for mine once I have new gearbox to check position.

[tvrsloth]

Hi Neil

Thanks for pictures, I like the set up you have think I will look at modifying my chassis the same way to take diff, are you selling kits lol.

I was told that this was a griff 200 chassis but to be truthful I am not 100% sure on the differences, I have the removable lower centre bar below the high bell housing tube and the engine mounts look different to grantura mounts.
I will add more pictures when home.

thx Neil

[tvrsloth]

Please correct me if I am wrong but there are 2 types of griffith chassis?

The first being the chassis for the 200 then the second being the chassis for the 400 which has a modified rear end to take the uprated suspension components.

So could this be an griffith 200 chassis with original specification rear?

Are there other design/mods that identify them?

It does have a hammered narrow tube between the right hand upper and lower main inner chassis rails, around the area the bell housing would be.




Your ideas please.


Neil would love to make race car out of it as i used to race bikes and miss the fun, would love to chat with you and see all that is needed, away from my wife so she does not know how much I will spend.

thx Neil

Edited by tvrsloth on Tuesday 8th September 16:29

[tvrsloth]

Does anyone know the metal specification for the grantura/vixen chassis please?
I am after new tube material and flat sheet.

Dollyman did you have the bushes made specially for that rear differential mount?

Thx Neil

[tvrsloth]

I am going to build it for road use, but also track days etc.

Not going full racing as i can not afford to do it to the level my competitive nature would want me to.

[tvrsloth]

Well with only 4 hits of a hammer and 8 on the other both the modified rear diff mounts fell off.