head stud pattern

Post by **Piledriver** » Sun Nov 23, 2003 1:45 pm

The 964 jugs are aluminum/Nicasil, yes?

Boring them might be possible, but replating gets expensive.

Wally · Post by **Wally** » Sun Nov 23, 2003 2:13 pm

Yes they are Nikasil and have a 100 mm bore. Replating is almost never necessary, really.
Walter

Post by **Piledriver** » Sun Nov 23, 2003 10:27 pm

I meant if you were to bore oversize...

Replating is still FAR cheaper vs a set of Nickies, in the odd case of it
being required. (sand)

There is also a place that sells a ceramic/nickel composite coating for bores...
google for it, I can't find the link, I swear I looked at it yesterday.
(SUPPOSEDLY better than Nicasil, sounds very similar)

They were based out of the UK, and had a US reseller IIRC.

Cam · Post by **Cam** » Wed Nov 26, 2003 5:40 am

Wally. Sounds like a wicked engine. Mind if I go down this route myself?

I'm looking at using 911 heads and nicki 964 B&P's would be ideal too. Can you PM me the cost of the barrels and pistons secondhand, if you don't mind ofcourse.
Thanks!
Cam

roo · Post by **roo** » Wed Nov 26, 2003 11:32 am

i would also like to know what the going rate is for the p&c's. agian if you don't mind sharing what you paid.

Wally · Post by **Wally** » Wed Nov 26, 2003 1:23 pm

Hi guys,

This might become a bit off-topic, but whatever.

It is not really a wicked engine, because it will have the stock crank, a moderate street cam; only bigger jugs

; the really wicked engine is also in the works, but that takes a bit longer and is another story...

Your enthousiastm is inviting, so i have no problem of course to share my costs, but how can you judge if it is fair, cheap or expensive if you are at the other end of the world? I mean, there is hardly a world-wide market for these obsolete parts. But you may consider that yourself

I paid 300 euro's for six second hand piston/cylinders. I must say also that my machinist is doing the work in the evening in his own time, so he's not calculating me top dollar.
So far: case machined, cylinders machined and heads opened up: 100 euro's. Pistons still have to be machined, rods also (from 22 mm to 23 mm pin diameter) and the heads have to be machined for the right volume/clearence. Also spacers have to be made.

Well, one thing at the time.

Regards,
Walter

kit · Post by **kit** » Thu Nov 27, 2003 8:52 am

Hi Wally
you have email!
what pistons are you using/going to use... hemi porche pistons won;t fit in a t1/t4/t5 chamber
kit

Wally · Post by **Wally** » Thu Nov 27, 2003 9:52 am

Good to hear you will be using those parts also.
Well, I don't want to discuss details yet, but yes I will use the porsche pistons. The domes will be machined to a certain, proven spec. This also keeps costs down a lot.
I just replied you.
Walter

Cam · Post by **Cam** » Thu Nov 27, 2003 11:01 pm

Thanks for the info Wally. I'm looking at lots of options in regard to 100+mm B&P's and aircooled head options. Using Porsche parts seems like a perfect solution. Factory hi-po aircooled parts

300 Euro is about $500 Aus, so it would be about 600, landed here. Which is'nt too expensive when you look at the costs of LN nickies. Which will be getting near $4000 Aus

Wally · Post by **Wally** » Fri Nov 28, 2003 4:11 am

You're welcome

Remember that a direct comparison to the ready and proven LN sets is not possible since you will have to add all the machine work, of which I have no exact idea how much that will be. I have only done a part of that yet.
Also this set-up (with the type 4 heads) has not (yet) been running in any aircooled configuration as far as I am aware!!
Therefore it is highly experimental for now, but great fun so far!
Greetings,
Walter

kit · Post by **kit** » Sat Feb 21, 2004 1:14 pm

I think my 964 pistons + cylinders cost me approx £450+vat + carriage.
having looked at the T4 block you would have to rotate the cylinders 90deg to get the stud spacing close beforeopening out.
hope this helps someone
kit

Wally · Post by **Wally** » Sun Feb 22, 2004 12:39 am

Hi Kit,
How is that? The 964 p/c have a square stud pattern, so you can rotate all you want, but that won't make a difference...
Best regards,
Walter

kit · Post by **kit** » Sun Feb 22, 2004 6:08 am

I shall have to go back into the garage and have a look at the head and barrels I have got. Didnt quite work out last time I looked
Kit

kit · Post by **kit** » Sun Feb 22, 2004 6:27 am

Hi Walter
I owe you an appology.Yes the 964 barrell stud pattern is square.
I must have moved the barrel to get best fit (or so I thought).
Need to open head spigot bore to 113mm to centre barrel in chamber and try again.I dd notice that the offset T4 stud is almost outside of the cast finnage on the barrel.maybe if you proof machined the outside of the barrel at that point and slotted the other 3 stud holes is the best way to go?
kit

Wally · Post by **Wally** » Mon Feb 23, 2004 12:01 am

Hi Kit,

No need for that; we're here to help each other out with our hobby

Better take this discussion to the typ4rum tho, as this is not wbx related anymore. I openend a thread a few weeks ago with pictures of redrilled 964 jugs there.

Greetings,
Walter