sbc mag base to borrow? - or buy ?

[The yob]

Hi all

Has anyone got a mallory super mag 3 mag base i could borrow to check for clearance issues against the back of my blower! ? i have the actual mag. Im going to be odering from the states but dont want to be forking out for a offset one if i dont have to ! or anyone know of one for sale?

im based in the midlands

many thanks

Mat

[MotorPsycho]

what size is the blower? 6/71 should fit without problems, 8/71 will most likely need an offset drive

[The yob]

well this is the thing!...........im abit confused!, i bought it as a 6-71, but it looks abit big to me!, maybe its a 8-71! >? i have some pics on my site uf you anyone can shed anylight on it? it looks like the mag might fit bt it will be very very tight! , thats why id like to check before i order


http://www.freewebs.com/smalltorque/apps/photos/al...

[MotorPsycho]

quick check, rotors are 15" long in a 6/71

[paulguv]

Hi Mat

You can borrow my one, are you going be at Warwick on the 24th?
Adams right the rotor length (case length between the plates) is 15" for a 6/71 & 16" for an 8/71

Edited by paulguv on Sunday 11th January 00:25

[v8 jago]

Im currently going through this problem with my bbc/ 8/71 set up.
My dizzy hits the blower and im about 1/2 to 3/4 inch from the blower lining up with the blower manifold bolt holes. I bought a brand new msd dizzy and it is too wide and around 4 3/4inch wide on the cap.
Ive heard there is a mallory that is narrower and is touch and go as to weather it will fit or not.
Ive heard of an off set drive But havnt a clue as to what one is !
Can someone tell me of tell me how they work..

[anonymous-user]

The offset drive is essentially a belt in a housing, ontop of the existing mag drive shaft, which takes the generator further out. There's normally options of how many inches of offset you need (dependant on blower case length, be it 8/71 thru to 14/71). Typical offset drives look like this (Chevy ones at least):



It could be you just need what IIRC, is a flat top dizzy. Essentially a regular one, but squished to clear underneath a blower (piccy below):

[The yob]

hi Paul

Many thanks for the offer, On the 24th i will be around in the morning as i have my god daughters b-day party to go to at 2pm ! > , Im not sure what time your planning on coming up to sunny warwick? If im not about i could get my brother to meet up with you over my unit ?(In Warwick)

Many thanks for your help

Mat

[v8 jago]

Thanks for that jon. Ill look into that now i know what to look out for and keep an eye on one or the other on the for sale ads.
Cheers Adam.

[Time Machine]

If I recall correctly a Vertex mag is slimmer and might fit better, although some people seem to dismiss them purely because they are 'old'.

[fester426]

Although they may be slimmer,they are just as tall, and that really is the problem.As for old vertex being no good just cause there old,well thats pretty accurate,on a fuel engine ,an old mag is poison,we have ours rezapped every year at don zigs,whats interesting is that he will uprate say a 4 amp mag to 12 amp,,,,,,ish,and so on,but what is neat is that he will rework an old style mag to produce modern amperage,,,,so all the nostalgia stuff can look right and perform,,,,,,,,,,,,,looks like you need an offset drive as in the piccy,as you state you are using a supermag 3,or a front mounted mag drive which if you have the room are good news,as you can leave the mag in when servicing the p@xy thing!

Edited by fester426 on Monday 12th January 18:34