What Engine for 500BHP

[Liquid Knight]

You could ask Marc or Karl to get their lathe going.

http://www.facebook.com/pages/Wisbech-Engineering-...

[turbonutter]

Thanks for the link,

I have got one lead on the right bolt, but they are shut for the weekend, so waiting for a reply....

I did think of turning a countersink on a bolt, the problem is getting the hex cut for the allen key

[Pumaracing]

Presumably it would be possible to helicoil the thread back to a 12mm x 1.75 standard pitch and then use an off the shelf screw.

[turbonutter]

Pumaracing said:

Presumably it would be possible to helicoil the thread back to a 12mm x 1.75 standard pitch and then use an off the shelf screw.

Now why didnt I think of that

If I dont get any joy with contact for the bolt, then thats going to be the way forward.

Cheers

[turbonutter]

Having the starter bolt to the plate, makes checking the starter engagement with the ring gear easy...



Next Project is the Cross shaft bearing support Which will also be an engine mount...

Made a start on it today....

[OlberJ]

Excellent. How are you cutting and machining those plates? Water jet?

[turbonutter]

OlberJ said:

Excellent. How are you cutting and machining those plates? Water jet?

The Adapter Plate was waterjet cut first & then finished off on a CNC milling machine. I believe the Countersinks were done by hand.

Edited by turbonutter on Sunday 4th November 18:04

[Pumaracing]

That mount looks flimsy to me, not that I know what loads it's supposed to take.

[turbonutter]

Its not finished yet, it needs more bracketing.......

The Origonal Alfa mount on the 12V engine uses just 3 M8 bolts to the block + 2 dowels & ends with a foot that bolts to the engine mount with 1 M10 bolt.

Pretty sure when Its done it will be strong enough...... time will tell of course

[Evoluzione]

turbonutter said:

The complicated bit now is I need 1 Socket Countersunk M12x1.25 bolt 30mm long.........

All the rest of the bolts are easy to find....

Why not take a normal socket head and turn a CS on the head?

[turbonutter]

Evoluzione said:

turbonutter said:

The complicated bit now is I need 1 Socket Countersunk M12x1.25 bolt 30mm long.........

All the rest of the bolts are easy to find....

Why not take a normal socket head and turn a CS on the head?

You loose all the strength....

[Evoluzione]

turbonutter said:

You loose all the strength....

I had a late night last night, worked today, I'm tired, I need to go to bed so forgive me, but how does a bolt you make become weaker than the one you buy?

If you start with a 12.9 bolt and put a CS cut under the head won't it become what you need?

[Mikey G]

Evoluzione said:

turbonutter said:

You loose all the strength....

I had a late night last night, worked today, I'm tired, I need to go to bed so forgive me, but how does a bolt you make become weaker than the one you buy?

If you start with a 12.9 bolt and put a CS cut under the head won't it become what you need?

Bolts are normally manufactured using a forging process then the thread is usually machine finished. The whole bolt then goes through an annealing process to re leave the bolt of any strains caused during the process and this is what gives it its final strength. Any machining that takes place after this can cause weakness in the bolt.

[turbonutter]

Mikey G said:

Evoluzione said:

turbonutter said:

You loose all the strength....

I had a late night last night, worked today, I'm tired, I need to go to bed so forgive me, but how does a bolt you make become weaker than the one you buy?

If you start with a 12.9 bolt and put a CS cut under the head won't it become what you need?

Bolts are normally manufactured using a forging process then the thread is usually machine finished. The whole bolt then goes through an annealing process to re leave the bolt of any strains caused during the process and this is what gives it its final strength. Any machining that takes place after this can cause weakness in the bolt.

Also the hex for the allen key in a countersunk bolt is smaller than in a normal cap head, if you machine a normal one, you will be very close to breaking through into the hex for the allen key. Also the diameter of the head on a countersunk is much bigger than on a normal cap head. The differences are to ensure the bolt head is strong enough.

[Evoluzione]

Ok, I understand.

[turbonutter]

I Managed to get one in the end, not cheap at £5 each, but a lot easier than fitting an insert....

[turbonutter]

Bngine mount/bearing bracket now finished (well bar removing sharp corners)







Picked up the overhauled gearbox yesterday, so after the car has had the exhaust tweaked, then hopefully it should just be a case of putting everything together.....

[OlberJ]

They look substantial

Looking forward to some videos of this on the move.

You'll hopefully find the ratios on the E153 are quite nice on the road. Certainly with that amount of go they'll not be too long.

[turbonutter]

I am used to big ships, where everything is substantial...;)

Ratioa wise, this is what I get with my wheels.


Its not too bad, Could do with a taller 1st etc, but we'll se how it is when i get it on the road...

[OlberJ]

My memory is a little rusty on boxes but there isn't much in the way of ratio changes available outside custom gear sets.

See how you go though.

Might have missed it but has this one got the standard LSD or an uprated jobbie?