Pelican Parts Forums - Help, advises needed

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- - Help, advises needed (http://forums.pelicanparts.com/911-engine-rebuilding-forum/113274-help-advises-needed.html)

What's that black sealant on the case halves?
-Chris

Chris,

The sealant from the garage, I will ask tomorrow

phe

Great Images Phe - Keep em coming.
Have you rebuilt the heads yet?

Great pictures. The black sealant is worrying me. I don't see any assembly lube on the rod assembly. Maybe it is just not in the pictures.

Quote:

Originally posted by phe
Can I still use my SC fuel pump without problem with the 46 carb?

phe

you can find the answer if you ask to Daniel from Special auto (95000 Herblay) ...he has already make this modification...SmileWavy ;)

On the subject of EFI vs Carbs-- I would say the level of difficulty and time involved for the two are the same up to the limit of the carbs ability of performance, not counting any pollution control considerations. Both take a dyno or many hours of track time to get tuned in over the enitre rpm range. But the power band vs AF ratie is very very forgiving, so carabs perform quite well in this reguard.

I would like to add that if you are really going to get everything that EFI has to offer you must also change the combustion chamber design, the piston and ring design, the intake and exhaust and several other things. You will not get year 2000 perfromance out of a 1970- 80 something engine, no matter how long you play with the EFI. You probably will gain a lot in terms of pollution control but not performance. I wish you could. I am an electrical engineer and would love to be able to tweek one of these older engines, but I cannot find a workable solution without redesigning the whole engine. You can probably do better with a chevy because they are water cooled and since you have to have aftermarket heads anyway ( nothing chevy makes is real usefull, except the block) and can bore them to the precise dimensions required by a modern engine, and can buy newer pistons with the correct ring size and placement...ect

Wow, sounds like Jack is reading my book!

:)

-Wayne

Wayne, sorry but Jack is not reading your book, he has a good experience, but I am reading it for him...

The black sealant is from airplane research technology, this is one of the little secrets of Jack the mechanic. This sealant resists better than normal, but it comes from a black factory from a secret lab from nowhere....

Phe

phe,
Has you mechanic done many 911 motors? I don't want to alarm you unnecessarily, but the lack of a 911 engine stand, mystery black sealant, and a rather dirty work area is setting off warning bells in my head...
-Chris

Do not worry, the engine stand is coming now.

I fully trust the mecanics, I have seen engines rebuild by him, they are running strong and the reliability is really good for track and street. I am not going there as a blind man.

If you had the possibility to use aerospatial sealent, you would, guess I correctly? I just cannot say where it comes from because this is not official.

phe

THose remind me of the Max Moritz pistons...

no modification requires..3.0 => 3.2 L ..cranckshaft 3.0 sc ?? not?SmileWavy

Phe,

I didn't see any angles where there was assembly lube on the bearing surfaces of the crank and Rods. I'm sure it's a basic step that any mechanic knows, but they DID use it right?

hugo

3.2 short stroke <> 3.2

chris

I do not know what you mean, could you please develop a little.

phe

Quote:

Originally posted by phe
hugo

3.2 short stroke <> 3.2

phe

i m not guilty,it s jack voice :D

chris,

This is not easy to see but they are there,for my knowledge is it what you are speaking about?

http://forums.pelicanparts.com/uploa...1_MVC-007F.JPG

http://forums.pelicanparts.com/uploa...1_MVC-005F.JPG

phe

Phe
you state at the beginning of this post that you have 3.2 conversion kit. Is the kit from a European supplier and if so could I ask where from and perhaps how much they cost. I have an associate who has told me that they can be purchased for £1800 (approx 2,010euros) + carriage
cheers
Tom

Hi there,
I think that remarks has been done enough according to this engine rebuilt.
I'd like to talk about the EFI vs Carbs discussion concerning SC engines, but I think this isn't the aim of this current thread; let's create a new one ?

Regards,
L