Movin' on up

[Rusty's Uncle]

My tuned up little 499ccs engine is running a treat at the moment but the original 100,000+ miles non syncro gearbox has decided to spit out oil onto the new clutch I had fitted which is most annoying but not unexpected as the box is quite crunchy and jumps out of 2nd (especialy when cold for some reason) . So I just bought a 652ccs engine which was alledged to be fully reconditioned. The engine has some new parts like pistons & barrels but if sheared studs, missing nuts & bolts, stripped threads etc etc is the seller's idea of recon then he is a t**t & lucky he is not on the furum and is now going on to destroy a VW with his engineering "skills" 
So plan is to prep a 126 synco box and I am stripping the engine completely so I can check it all out. I will the reassemble to my standards. Again I am going for some modest mods for the reassembly. Looking at fitting a lighter 500 flywheel, The Abarth fast road cam that I have, slightly sporty exhaust, 123 ignition and the modified head I have from the 795ccs engine so I can test it out. Thinking of running it in with a standard carb on a modified manifold spacer to get a good flow pattern. Then if all goes well I can then test out the twin choke Weber 30DIC to see how that goes 

[dajwid]

(alledged to be fully reconditioned)

Ah ha, I know the feeling.

Good luck.

[fiatmaluch126]

Sounds good Rusty 

[Rusty's Uncle]

Before & after............ Oooooooooo some bits have dropped off 
.
.
.
.
.
Just as well I stripped the engine down as I reckon that it would have self destructed in about 10 mins of running going by the way it was assembled 
All sorts of rubbish work but crazy in that the pistons & barrels are new. The main bearings & oil seals look new but the £20s worth of big end shells were very worn but fortunately not enough to damage the crankshaft. So just ordered new big end bearings & assembly will begin soon 

[Allan]

Good morning Uncle Rusty. What's with the Horopito on the photos. Have you had any experiences with the Dellorto FZD carbs?

[Rusty's Uncle]

Hi Allan, I started a file Horopito with some pictures from there now all my pictures download into that file so they get the same title. I do not mind as it brings back great memories when I see the name. Check out the sunshine in the pictures , it is our turn to have it now 
I have a Dellorto 38 FZD & manifold which came with the 795ccs Alquati engine which is slowly being worked on. However I am hoping to try out the Weber 30 DIC carb first which kind of brings us full circle as there are a couple of Weber 30 DIC carbs on 850 Sport Coupes in the Horopito yard.
Darrell from this forum is running a Dellorto 32 I believe that he has spoken highly of .

[Darrell]

Yes as Rusty says the Dellorto I have is very good.

It over-fuels a bit and my fuel economy is questionable when you run it hard but floorless acceloration and the thing I like the most is the manifold gets the carb away from the head (heat) so all the fuel doesn't evaporate out the carb.

I tried a bike carb and had pretty good results with that, just wasnt happy with the mounting it was on.

One thing comes-up over and over again is that no matter which option of carb you go for, the best set-up would be to have a specialist put the car on a dyno and jet it from there.
Make sure all the work you want to do to the engine is done first.
For example with mine, it is scheduled for dyno once I have completed what mods I intend doing.
So far fitted carb, sporty cam, sporty exhaust alloy sump, alloy extended rocker cover to increase internal air volume up top. Electronic ignition that works fitted. Electric fuel pump fitted and plated where pump was, to be used as breather later.

Breather to be sorted with catch tank. Oil cooler to be fitted. One to one belt drive toothed, alloy fan and possible re-work of venting of the rear bodywork.
Dynamic balancing to be done and lightened flywheel with increace to 700cc
although I have seen bigger piston kits, 700 seems to be the most durable.

This may all be scrapped as I am tinkering with a double overhead cam 4 valve head..who knows if it'll blow-up, nothing ventured nothing gained but then I'll be after a delly 40 twin choke 
But then there are a few other ideas the conservatory plans have put pay to..

I like the idea of the SU as mixture across the range is adjustable via the nut that moves the jet in relation to the needle. Smallcox has an SU and to be honest, I think the SU would be cheaper and achieve just as good results and should fit strait onto the aftermarket casting for the Delly FZD. Ceramics are available from a website in australia to fit the SU's keeping them nice and cool  Spares readily available for them too 

There was a song in the 80's that went 'never ending sto-ory...la-la la la-la la la-la-la'

[Allan]

Wasn't one of our members having a problem with the damper in the SU.

[smallcox]

Hi, Power hungry,

The SU is a good carb when you require an all round performer like good fuel economy and power but will not give as much power as your Dellorto although this will be at very top end. I hear you all mention the FZD manifold but believe this will only let you fit a 1 and a quarter SU to this and to be honest this is way to small even if you flow the carb. Go for a 1 and half inch (38mm) on a decent manifold (good luck with that one to) and you will have somthing near your Dellorto but economy will be possibly better. I get a real 51 mpg on mine

As I say the manifold is the problem, may have to make something

In the quest for power I have just sent my cyclinder head away for bigger valve seats to be fitted, 36mm and 30mm

[Rusty's Uncle]

A blank Canvas  

[dread]

 8)now thats clenzzzzed.

[Darrell]

Blank canvas No6?

[Rusty's Uncle]

No I think that Blank Canvas No 6 is still hanging in the Tate but I am starting to get some lines on my artwork 

[Allan]

You're just showing off now Rusty.

[Alfons1972]

No I think that Blank Canvas No 6 is still hanging in the Tate but I am starting to get some lines on my artwork  

Hi Rusty,
That cam is nice... original...  
is there any additional info on that camshaft saying, what type it is?
I also have an original Abarth-cam from 1969 with a similar shape and there is the number 079 on it.
Do you have more original parts? I always am looking for original parts and now am building an 595ccm-engine out of these... (but unfortunately not with an original crankcase)