L26 Block

[bullzed]

Just asking a simple question, can you bore out an L26 block as much as an L28 block? I'm considering going 2.9L with my Z but wanna know if I can just bore this L26 out.

 

If not, can I reuse the L26 crank in an L28 bottom end?

[peter mc]

The 26 crank is the same crank as the 28 same stroke , can it be bored as far no its the same bore as the 24 , some times you can get a block out to 86 mm but not very often 85 mm is as far as most go . most 28 blocks will go to 88mm some go to 89mm  , so if you want a 2.9 go a 28 block and take it to 89 mm you may need to sonic test 5 blocks to find one that will go to 89

[bullzed]

Thanks Peter! How nicely does an E88 head fit onto an F54 block? The reason I ask is that my engine is a supposed 10k build by Datrally (told by previous owner on this forum) and it seems pretty warm compared to standard L28's I've driven. If I were to go F54 with flattop pistons, would there be clearance issues?

 

I have yet to get the engine spec'd so I couldn't tell you rod length, camshaft profiles etc.

[peter mc]

you can fit any head on a f54 block , all fit  not all make power lol btw there are many E88 heads i have 3 that are all different and the early ones don't work as well as the late  the best E88 are from the injected 2.4 engines , there chamber is a good design all they need is some big valves and a port job and there a killa head ,  just remember what ever head you want to use you must know the cc of the chamber , so you can work out the comp ratio and build a piston from that  , and also you can then work out piston to valve clearance some cams will need the piston to have valve pockets in them  , get a pro to help with this part or it will be nasty lol 

[bullzed]

Are there any easy signs to distinguish the early and late model heads? I'm definitely going to be careful when it comes to the combo, piston +valve is going to spell the end of any engine if not properly worked out.

 

I have a good friend here in Brisbane who does all sorts of work for L4 and L6 engines who will give me tips etc on the build. I'll probably end up getting a dyno on the current 2.7L L26 I have to see whether an increase in displacement will produce larger figures.

[dat2kman]

Jack Bros in Smallwood st Underwood are good for block cleaning, sonic testing and machining.

[bullzed]

Thanks Jason! I have a friend who has his old workshop available at his command (his apprentice now runs it) and will be able to help me build this hopeful monster.