ALFAGTV6.COM

ALFA GTV6 GP · Post by **ALFA GTV6 GP** » Tue Mar 29, 2005 2:51 pm

HI guys,
Looking for sources of new or low km engines for two of my babies (3.0 12v 3.0 24v 3.2 24v all motors considered)
as I am in Western Australia I have heard of low km Jap and HongKong imports but would be interested in all sources available to Australia.All feedback appreciated Thanks John

Maurizio · Post by **Maurizio** » Tue Mar 29, 2005 11:11 pm

OK Jim thanks for the numbers, didn't know the 2 mm for exhaust!

Will do when the 155 pistons are machined and engine is pre-assembled again. Want to go the SAFE route this time.
(

8000 rpm at the end of Kesselchen, I wish I could

)

ps checked the head height this morning before going to work was 135.3 mm is ok (spec is >134.5)

Saluti,
Maurizio

Mats · Post by **Mats** » Wed Mar 30, 2005 12:27 am

Maurizio wrote: 8000 rpm at the end of Kesselchen, I wish I could

Just put it in second gear, maaaybe third.

Jim K · Post by **Jim K** » Wed Mar 30, 2005 6:05 am

Maurzio, AR head thickness specs don't mean crap! They warn you about 'grave engine damage' if you skim the head under the min spec, but if you check the valves/pistons like I said, don't worry about a thing. I went way under the spec in the 3liter heads and I failed to destroy the engine, although I'm still trying, 110,000km later!
Jim K.

Maurizio · Post by **Maurizio** » Wed Mar 30, 2005 10:50 am

JimGreek wrote:I failed to destroy the engine, although I'm still trying, 110,000km later! Jim K.

Ask Mats, he probably can help you on that one

Mats · Post by **Mats** » Wed Mar 30, 2005 1:10 pm

Jim just lacks the proper motivation...

A swift downshift and you are home free (just make sure to toe-heel to save the gearbox).

Jim K · Post by **Jim K** » Wed Mar 30, 2005 8:44 pm

Hey Mats, remind me if we ever meet, never to lend you my car!! (At least I'll know you'll try to save the gearbox!)

Jim K.

Mats · Post by **Mats** » Thu Mar 31, 2005 12:05 am

Hey, I'm not the one claiming to trying to destroy my engine (and not succeeding I might add).

I'll let you in on a little secret, I have never red-lined my 75 Turbo. Not once.
I'm very gentle when driving cars, unlike some of my friends. I might use the stuff hard but not in a rough way.

Maurizio · Post by **Maurizio** » Thu Mar 31, 2005 1:20 am

Not having to do your rebuilt work and a lack of a technical background also helps

Mats · Post by **Mats** » Thu Mar 31, 2005 3:51 am

What do you mean?

Maurizio · Post by **Maurizio** » Thu Mar 31, 2005 3:55 am

Maurizio wrote:Not having to do your rebuilt work and a lack of a technical background also helps

In being capable of destroying engines, gearboxes, etc....

Mats · Post by **Mats** » Thu Mar 31, 2005 4:11 am

Ah, but in the case of some of my friends that doesn't seem to have any effect at all...

(having to rebuild and being technical that is)

Jim K · Post by **Jim K** » Thu Mar 31, 2005 7:15 am

Hey Mats, I don't believe anyone wants to be a metal cruncher, especially when they have to pay for the damage!
I rarely hit the limiter in the 3liter, I somehow get awful close to it, since its very difficult to look at the tach and race at the same time!
(The people who invented shift lights probably agree with me on this) but I know other guys who use the limiter as a shift light!!
Seriously, breaking a motor is a snap, but driving the piiss out of it for max performance with respect is the intelligent thing to do.
Ok,"so I won't dub you 'Mats the Terminator', it doesn't rhyme!

Jim K.

Alfaross69 · Post by **Alfaross69** » Sat Apr 02, 2005 10:02 pm

Maurizio wrote: . Checked the rod and it is 156,02 mm. So where the "$&% does the piston\exhaust valve contact come from.

Removed the cams, put the head on its back and filled the combustion chamber up with some very thin oil. (measured cumbustion camber volume also) And after two days only one exhaust valve leaked a very small amount of oil into the exhaust port. Contact must be very marginal, not to bent a valve.

Is the exhaust timing that critical, is 2~3 deg early enough to let the valve hit a piston? Or do I have a head which is skimmed to much.

Maurizio how did you measure this combustion chamber volume? with a burette marked in cc's, a flat plate of plexiglass with a 10mm hole in it ?

Alfaross69 · Post by **Alfaross69** » Sat Apr 02, 2005 10:21 pm

JimGreek wrote:Nord rod: 156,950/157,050mm (from AR shop manual)
The TS length is not specified in the official literature, but is a little shorter if I remember right. MATS...HELP !!! (HE knows!)
Jim K.

Off the subject but I am curious(and sometimes confused) about dimension notations ,Why do europeans seem to use a comma,,,,, for a decimal point?. My ferrari shop manual is also like this. Is this a taught convention ?
In the USA we use the comma between thousands and hundreds place(column) and between the million and hundred thousand place(column) 1,000.37 or 1,000,000.657 or metric 1597.42mm

decimal points