My project: 308 GTB group 4 rallycar

Thanks to my brother for posting the photos
hi Morten i made the cage from photos i found on the net, where i live we have all the skills to biuld rally cars, we all help each other to keep the cost down, in the past it was mainly Porsche rally cars,but now there are so many Porsches, how long do you think before you have yours built
Jim

 

Hi Morten,

your project is great. I'm also having these thoughts about building a group 4 for two years and can't decide. My '76 Euro drysump would also be a nice base for such a change over. The fact that the car is as pristine as it looks on the pic, makes it very hard to decide for me. It already has a lot of mod's (with original specs still within reach). That's why I'm still in doubt. A stradale version with those coffinspokes would be an option for less drastic bodychange but at the other hand the gr.4 is more like the way to go. I have build racecars before but I know from my own experience that there is almost no way back when one has left the path. I must admit that you have caught my attention for with this tread almost painfully. Doubt over doubt.

Question: will you also use those Kugelfisher's (hence 2500 Euro for dyno'd and ready to go)
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Stunning.

Can't wait for more updates!

 

Cool,,, can I join?
I want to have the first, , Mondial 8 Rally'

Edwardo

 

ha,, ha, I counter you play,,,,,,
with Jedi Squirrels







and, that is a GTB rally.
(Wouldn't my Longer wheel base Mondial prevent this type of, , , "Unfortunate off-road Excursion?)
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Very nice....best of luck with the project..

Ry

 

Morten,
I worked with Kugelfisher on my racecar and I can not say the sound was bad at all. But, and that's more important, all those gr.4 Michelotto's drove with KF. (As far as I know) It's just a tough job to get things finetuned. But if you want to copy and honour the original then this is the pure way to go.
Fact is that the KF-system is reliable effective but dated. The better system to build is FI managementsystem but, and there's a serious point, it misses the sound that carb's and mechanical injection made so distinctive.
At the other hand, I must say that I admire your initiative and I will follow your progression closely. because, maybe, I'll follow the same path. The flares, and when it comes to actually fabricate them, are no problem at all. Glassparts are not so difficult to make. As time passes by, I can help you out with some detailed hints.

regards Marcel

 

I get your point Morten.
The KF pumps have been used in several special 70's productioncars. A very succesful streetcar in that era was the BMW 2002 TI Who used the KF pump. A lot of these cars went to the scrapheap but the autocrossworld has thankfully used these pumps for many years here in Europe. Now they are old fashion and everyone needs to have a motormanagement. At this point you can imagine that all the spare KF pumps now are somewhat left as unusefull parts and will cost a fraction left. The only part of concern is the cam-profile. The lobes of these pumps can and must be machined to individual dimensions. It would be interresting to know if Michelotto would give that info away (this is something that I haven't tried yet). I've already informed myself about the matter and at the end the costs will be equal to a complete modern motormanagement. (inductionparts included). I still have a 4 cill 3.1 L. race engine with a KF. I've modified the engine several times but it's the same engine that pushed Dutchman Johnny Hakfoort over the finishline as European champion in those 80's. In rally and cross the use of a consistent fueldelivery was primairy. Carb'd engines tended to fail under certain circumstances where centrifugal forces and lift-offs were the cause. (This was just as important to avoid as to have a dry sump to win a race eventually)
I'll take a pic of my KF ASAP to show you. You need two of them of course.

Regards,
Marcel

 

The front hood is aluminum on my steel cars.....if that answers your question.

I think the single distributor change is fairly straightforward, with a blanking plate on the unused side.

The only reason North America 308GTBs had two units was to make space for the R1 and R2 points system, controlled by the throttle microswitch....my cars retain 2 distribs but only one set of points in each....set to run upper revs.

LOVE the headlight system ....I have often wished for one, driving late at night thru cattle or deer areas.......

 

Hella on the lamps, most likely.........I'd recommend a dedicated circuit breaker/rocker switch and you may need to rewind the alternator if the lamp wattage is too high!

I suspect the aluminum hoods were all made at one time, and that's why not much difference as the change was made from 'glass to steel cars.......I don't know that I have seen an actual fibreglass hood, although there's a thread where they used the type of slotted one that takes radiator out blast right back out the top ahead of the windshield.

ddiesen fitted it to his car and sold me his old standard hood as a 'spare'.....

 

You can get both 4 point and 8 point distributor system parts support, but I think the 8 point caps are even MORE expensive than the 4 point ones!!!

Less made, I suppose.....

 

Can I have your old clock????

I really need one as two of my cars have lost theirs.......

 

Ferrari was pretty good at ducking specific questions during Homogulation...LOL!

I'd wager they were referencing the 'front clip' which of course was fibreglass.

 

Thanks for showing these pics Mate !!! it really shows how some of these cars get so far along.

Glad to see it being saved by someone like you to bring it back....Cant wait to see the end result!!!!. Good luck and enjoy the process, would love to see the pics step by step if you have the time...its always a gift for us to learn what people find that we havent seen yet.

Congrats on the car and the project !!!