928 lump

[QUICKASF#CK]

Has anybody put a 928 lump in an Ultima yet?

Also has anyone tried a quaiffe box yet?

Cheers Dan

[Igor+]

What is approximate price for Quaife sequential gearbox for Ultima?

[GTRCLIVE]

Starting at 10K for the box, then add your options. But they don't do a bellhousing for a chevy, or they didn't about 12 months ago.
The race car that had one had loads of trouble. ??

Not proven enough, try a Hewland LG600, well proven in F5000 and Maclearn Can-Am cars etc. 10K second hand.

[james]

Just for once, I agree with Clive

I've known several people who have used Quaife for various applications, and a lot of them have had troubles. Hewland are a much better option.

Neither of them is cheap though.

James

[Igor+]

I use Holinger gearbox in my Toyota Supra.
6 speed sequential.
Strong enough for 1000hp.
The only one disadvantage is that it operates by pushrod instead of cable.
And they makes gearboxes only for front engine cars.

Thank you.
I’ll try to find out information on Hewland box for Ultima.

[bogbeast]

Hewland website is:

www.hewland-engineering.co.uk/svga/gearbox_range.htm

Lotsa info and scary prices

I talked to Quaife at the Motorsport show, and there was some debate as to the ability of the box to take the torque of a well specced SB Chevy.

>> Edited by bogbeast on Wednesday 18th June 13:08

[rev-erend]

Re 928 (Porsche) lump - why would anyone want
to put this under powered engine into an Ultima ?

It also seems very expensive to rebuild too...

[AJLintern]

I didn't think it was particularly under powered - is it not lighter than an equivelent capacity chevy? Fair comment about it being expensive to maintain though and I expect there would be far fewer tuning options. How about the V8 from the Cayenne?

[james]

AJLintern said:

I didn't think it was particularly under powered - is it not lighter than an equivelent capacity chevy? Fair comment about it being expensive to maintain though and I expect there would be far fewer tuning options. How about the V8 from the Cayenne?

How about the V8 from a Chevy

[Igor+]

Unfortunately, I couldn’t find any Hewland gearbox that can be installed in Ultima.
Read their entire site.

[james]

That's odd, because I spoke to William Hewland a couple of years ago at the Autosort Show, and he was very helpful. For my car he suggested the DG300, although a car with massive torque may need a different model. I seem to remember that there were a couple of alternatives, but the DG300 was the most cost effective for my application.

It's probably best to ring and speak to them.

[GTRCLIVE]

www.hewland-engineering.co.uk/svga/productrange/nlt.htm


Try this on for Size then. Not to expensive but will do the job. 6 Speed Seq. 500lbs torque.

[brammo]

In the "odder things have been done" cateory, ironically the 928 heads will (with a bit of machine work) work on a Chev motor. With a bit of engineering you can convert the Chev to overhead cam this way and make a rather intersting engine. The heads are reasonable to pick up as their are a few cracked 928 blocks. If anyone is interested I can post a photo of the engine. Quite a sight!

Craig

[Tetteh]

Hey brammo, I am very interested!! Could you please post the photo? Also, what kind of power output are we looking at, and how hard is it to get the heads to fit?!

Tetteh

[ultimasimon]

rev-erend said:

Re 928 (Porsche) lump - why would anyone want to put this under powered engine into an Ultima ? It also seems very expensive to rebuild too...

AJLintern said:

I didn't think it was particularly under powered - is it not lighter than an equivelent capacity chevy? Fair comment about it being expensive to maintain though and I expect there would be far fewer tuning options. How about the V8 from the Cayenne?

Very interesting conversations. Did you know that the Cayenne engine originated from the early 928, 4.5 litre, but has had extensive remodernising?

My penultimate car was a 928S, and what an excellent motor they have - when you have a good one. Did you know that the original 928S was 2 944 engines joined together? Same for the later S4 and GT's - 2 944S engines!

I too thought about the possibillty of fitting that lump in an Ultima, but turned it down for the following reasons:

1) You would have to use the later quad cammed 5.4 litre as the early 4.7's fuel injection set up would require an expensive upgrade past 500hp.
2) The 5.4 heads are much taller and wider than the single cam ones, which might be an issue in a Canam.
3) The early 928's woth SOHC made about 310 hp standard.
4) The later 928's with DOHC and the larger 5.4 mill still only produce about 345 hp.
5) In the USA there are plenty of tuning firms for this car. I rebuilt mine with a Devek stroker kit, which took the displacement to 6.0 litres and 410 hp.

Even with power output up to 450 horsepower, you would need head work, and a pair of heads is normally another £2k, and suitable cams (4 off!), and you are starting to look at an expensive build for less power than you would get on a Chevy. I bought the full stroker kit, and by the time it was on my shores, it cost me £3k. Then if you want more power you need to sort out those nasty nicasil wet cylinder liners. That's an expensive job, but afterwards leaves the tuning potential higher, but again at a higher cost. I got all the stock bits like pistons (forged) and rings, gasket set and all new bearings and guides from Euro-parts, but there was only a couple of kits left on the shelf then (2 years ago) and they weren't buying anymore spares for the 928 - shame as they have THE best V8 rumble; truly in the TVR class for sound

Sadly I sold my 928 here on PH, as it done 'another' head gasket and I was fed up of throwing money at it.

[QUICKASF#CK]

Well thanks for the input! I knew even the suggestion of replacing the trusty pig iron would upset somebody!
but i was inspired by the earlier ally block thread.

If anybody out there with deeps pockets is interested rumour has it there is a tuning company in the 'Fatterland' which apparently rolls out 600hp porker v8's for about the same price as a well sorted chevy (£6k), when i find a site i will post it.

Nice one.

[brammo]

[pic] www.brammo.com/brammo572cid.jpg [/pic]

Here is the Chev with Porsche head, not sure if I mentioned it is BBC, but this particular set up is 572 cid and 4 valve DOHC. Fun eh?

Craig