316 superlite

[petrolhead]

3 small holes in the floor. Well, that escalated quickly..



I "weighed" about 30 stock valve springs and compared them to a few Schrick double springs. And now the R&D-team is very confused.

I measured the pistons against the head once more. With 0,4mm shaved head & 0,8 piston-head clearance the valves can have 3,6/3,3mm TDC lift. Which means I'll have to make valve pockets. 2,6/2,6mm nominal TDC lift on the cam, plus block & head both have to be shaved.

[petrolhead]

Nothing's really happened. I bought one more engine block (cast 1967) and one big valve head. Can't have too many of those in stock.

[petrolhead]

Finally got the Dbilas cam shaft.

Fits the original holes of the head. Any more lift and the cams couldn't go through STD size bearing holes. Not with standard base circle anyway.



Support for the steering column mounting. I'll have to make mounting points for it.


I bought a digital angle gauge. With that I can check and set alignment values for the rear axle when I build adjustments to it. Wheel alignment comes afterwards of course, but the "starting point" or "zero values" need to be checked.

[dougie30]

Noooooo it was sssooo clean and stock :(

Sent from my SPH-L710 using Tapatalk 4

[petrolhead]

Updated the thread title. I sold the black one.

[petrolhead]

We can all forget about that cam (above). It's bearing surfaces were GONE as well as those on the head. I can however use the double valve springs and big injectors from that purchase.

I ordered a 300 deg / 10,5 mm lift cam from Dbilas. <- goes to that "superlite"

Then I bought a set of OEM mudflaps for the black 316. Rear ones are "no longer available" but local dealer managed to find a pair for me :).

[petrolhead]

The piece that went to right hand side footwell, CLICK!


I bought a few parts..
E30 head that has this:

It's supposed to be 292. The cam seemed to be in good shape. I'll take measurements later to confirm what it is.

-With the head came this, a manifold modded for bigger throttle body, and some 350cc/min injectors.




Checked to see if the TII pistons clear the valves at TDC. That cam has a bit over 2mm TDC lift. Enough for a street car?

Those pistons have very thick crowns so making valve pockets isn't a problem even with a hotter cam or if I decide to have the head machined a millimeter or two :) .

[petrolhead]

I bought a real cheap E34 for spares.. Mainly because it had this:


I'll take that LSD unit and mate it to that 3,46 sitting in the background. I don't think it even needs any fiddling. It seems to have really good preload/tension/friction whatever. Or what's the correct term to describe diff properties.. And ofcourse, NA M10 won't produce enough power to trouble a 188 type diff :D


M3 windscreen, testing for fitment. With a bit of beating of the frame & welding it should fit OK

[petrolhead]

[petrolhead]

Still not much going on here..
I got around to welding that "scavenging tank box" on to the car..


Trunk space has become a fair bit smaller..


Black line marks the area I'll have to cut off to make room for the muffler.:loco:
I remember putting a fair amount of work to repairing that floor :D



Combustion chamber/squish area will look something like this once the engine is bored 1mm oversize:


Tested the collector with gasoline. Filled it up & stared at overflow pipe to see if liquid surface goes down.

It got a "tested OK"-sticker :D

This one has just seen a lot of driving.

I was going to try it at our club track day, but once I got to Ahvenisto racing circuit I realised it had blown it's alternator. I limped back home, luckily I have a collection of M10 alternators & stuff stashed away. :D
I installed a 14,5mm rear anti roll bar on it. It effects handling less than I remembered it should.. So I'll probably have a 16 or 18mm adjustable rear ARB made for the "superlite" project. Oversteer never hurt no one.

[EGoman]

Erkki f...k off!
You know I'd lose sleep over that extra weight. Oh, wait. LED:s on exhaust tip :o -must have.

Led light doesnt weight anything and make your car look faster :)

[petrolhead]

Jarno you crazy sob!
now it only needs some cool exhaust tip to make it real boy racer :D

Erkki f...k off!
You know I'd lose sleep over that extra weight. Oh, wait. LED:s on exhaust tip :o -must have.

[EGoman]

DIY-muffler, testing testing :D

What's the point of making one instead of buying? I don't know....
Works well anyway. Under 12cm diameter, not restrictive, 2,6kg.

Jarno you crazy sob!
now it only needs some cool exhaust tip to make it real boy racer :D

[petrolhead]

DIY-muffler, testing testing :D

What's the point of making one instead of buying? I don't know....
Works well anyway. Under 12cm diameter, not restrictive, 2,6kg.

[petrolhead]

i like the work that's been put into these two cars. keep it going, i'm interested to see what comes of that "superlite"

I started thinking about that when I was driving that black one, down some very twisty back roads. Sure it has no speed & no power but I like the feel of it, it's very nice and responsive. Now, the other one will be pretty much the same but less weight, better weight distribution, more power, better suspension etc. I think it'll be OK.:)