Cylinder Liners

I thought Nikasil was just a coating?

 

Nikasil is a coating.....Nickel and Silicium. On the Ferrari liners it is about 30 microns thick. You can change out to Nikasil-coated alloy liners, but you will need to change your rings to a type that are compatible with the Nikasil coating. The cast iron-equipped 2V engines use different rings.

350HPMondial may have some Nikasil/alloy liners, and/or rings for you....

http://ferrarichat.com/forum/member.php?u=28775

 

Those nikasil liners are pricey sir. If the iron liners are ok and measure up well, just either hone them or have them bored .010 and you will be in great shape.

 

Exactly. I have in stock likely the last (partial set) of new QV liners. If you must have Nikasil (aluminum QV liners), I've got them. On the other hand, for your application, John is spot on with his advice!

 

I also have a partial set,,,, traded one for some parts.
Sent one Impinged liner to Los Angeles... more on that later.

A few are scuffed and can be repaired, I do believe by NORWOOD Ferrari in Dallas, TX.
around $ 250 each. ( You MUST have a usable core.)


Edwardo

 

In case you can't find any, Superformance has them: http://www.superformance.co.uk/a-308/eg.htm

 

HUH????? $ 250.00 each + Import + Shipping


Or, I have a WHOLE bunch of Ferrari, OEM, 81 mm Iron Liners.
Eight are 3.1915" up to 3.1925"
a bunch more need bored 0.020" over..
see;

Edwardo
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You are a rich man, obviously

 

Bump,,
LOL,,,

 

The 8 ( 3.1920-3.1925) have been flat-honed.
And, are ready to be installed.

They will work with cast BORGOS.
But, not with my forged JEs' ( 9.8 - 1.0 )
I am getting 0.0040 deflection, with these liners in my block.
I need 0.0010
( Bummer for me, good for a BORGO Car..)


Edwardo
Cheep 81mm Liner Guy

 

Well wait a sec, those would work better in an engine with forged pistons than cast pistons woulnd't they? Forged expands more than cast of course. 3.192" with 3.1889" pistons would work.


I can't remember, but weren't those forged Borgos I sent up to you 3.1875? Or something around there? I think with 3.1920 bore, the most clearance you would be ok with would be .0035 with forged pistons.

 

Yes,,,, but,,,
my NORWOOD Hypereutectic Forged JEs' say 0.0010"....????
open for answers..

oops, sorry, never received any BORGO pistons, please send them again.


,,or, it was another 308 2V "Friend in Need,"
I have now 14 nice BORGOS in Various States of Gunk.
and, another matched set of rods.
OH, and my problem is the "Fit" of the liners in my block, causing liner deflection.

I am toying with the idea of going back to the BORGOS with 81mm Audi Rings.
But, my mechanic says, patience and Get the Steel NASCAR Liners. ( 6 months out)

Edwardo
Cheep BORGO Guy
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There's a company in Germany who can make F1 quality liners for a very decent rate. They are the company making the 85mm liners to Carobu they are selling for $450 a piece (LOL, nuts). I forget the name of the company, but their product is outstanding and I believe they are around $250 a pop. I may go this route if I decide to build an engine with 87mm bore and a 360 crank. I'm toying with this idea in the future..... I'm thinking 2v engine too. Would be awesome.

 

As I recall, I didn't think that there was that much material in the block to support the base of a liner that size...although it would be fun to try!

 

Yes, yes... cool idea.
Note; the 2V can be made to flow better then a 4V. And, the combustion chamber can be more "Penti" shaped.


Edwardo

 

I'll have the block itself bored to accept it. Nick did 89mm, but I don't want to go nearly that size and Nick used Darton liners, but I'd rather go with the steel F1 units from the place in Germany. That would make for a 3.75L engine with a 79mm stroke crank. This is all stuff on the drawing board at the moment of course and is purely speculative for a distant future project. I'd love to do it in a QV engine to really get some flow from the heads and use a ITB arrangement with EFI. I'm talking loco now, I better sit down.

 

Explain. I installed larger ID seats, 44mm intake valves, lots of bowl and throat porting, and I upped the intake flow a solid 15%+ at most valve lifts. QV heads with minimal porting flow even more from what I've heard anyway.

 

I do believe you need Independent Intake Trumpets, qwerky camshafts and square exhaust ports. Like any 2V Top Fuel Dragster..


Edwardo

 

After talking to Carobu, their liners are made in England and are thin-wall steel (not cast iron) with a special coating. The thin wall sleeves reduce the amount of block material that needs to be removed (in the spigot area) while allowing adequate cooling flow between the liners (a problem with thick-wall big-bore iron liners).

 

They told me Germany! Probably just to trip me up. I wonder if they're using Westwood liners then. They are wonderful

I believe they not only have to remove material from the spigot area, but also from the liner shoulder mating area on the block. Unless the liners are that thin where no further machining is required there.

 

wait wait wait. I know who they use. It's Laystall with their special steel Cromard stuff which can be machined incredibly thin. There is some layer of chrome they put on the inside of it as well. Neat stuff.

 

Edwardo -- Cylinder Liner Install??? I have read the shop manual and searched online but would appreciate if you can share your procedure for installing 308 cylinder liners (car is 1985 QV euro - liners were re-nickasiled). Much appreciated