Adaptronic JIL

There are RTOC rumours of an Italian sounding member that has made a 2.8/9 turbo up near Liverpool
I'm trying to find him and see what he knows ...

All the RTOC RR runs .....some big power innit .....
http://uk.youtube.com/profile?user=ashygtt&view=videos
JIL
http://uk.youtube.com/watch?v=TxTcA4d1tqg

ANY even fire PRV crank that's not a Z7U will be what you need. Look also for Volvo 760, Citroen XM... Pug....

Wish I had at least one of my old ones, I'd swap you for your modded flywheel without even blinking

The only peculiarity is the Laguna version which has the bizarre 72.7mm stroke.

Done if you can find one The only ones on Ebay are surrounded by car I just want the crank and a piston with rod .

Lee,

What do you want to check exactly - 2.5ltr pistons and rods with 3 ltr crank? I'm assuming you want to use the pistons (from what you say above if I'm correct) and rods you have (3ltr and 2.5ltr rods are the same length).

Rod clearance is not a problem as I remember, I have spun this over on a mock build lower assembly to check combination of piston pin and ring package placement for my 3ltr hardware before I had the parts made - pistons and rods.

I ended up with a forged piston and a H beam 5.850" rod, 3ltr crank, 93mm bore. However, I think it would be more fun to build a 63mm stroke 93mm bore combined with a 6.000" or 6.150" rod.

Why do you say valves are a problem on the 3ltr head?

By the way I have a spare 3ltr crank. I can think of a swap...

Well buggere my sideways Where you been hiding
I'm after any cheap way to get more power .....Heads ,capacity whatever .
Sodium cooled valve on the Turbo heads ???

Anyway yes a swap and a conflab might be useful ....Your bits are still here Thought you were popping in

Hi Lee,

ha-ha ..not hiding, just recovering from being deleted joke!

Yes have been meaning to drop in passed by enough times , but just been too late (9-10pm) or early hours (4am)... London Scotland M6 express....

... since starting work in Newhouse I have been just been dead beat, don't know why I'm doing it to myself, except some mystic said I would find Mrs Right... which confirms I lost my mind!

Ok, I can sort crank. I have 3ltr pistons both n/a and 24V, neither of which I'll be using, so if you want to go 93mm let me know. Personally I wouldn't use the n/a 3ltr piston with forced induction. You will need a 3ltr block, as the spigot is different. If there is a nice brew, sausage and mash into the bargain I’m sure I can liberate the whole assembly minus heads:

You're on Martin .Try and leave a bit earlier one Sunday and pop in for a roast supper

Hmmmm. A set of 24v pistons on a 2.5 crank would go someway towards bringing the compression back up, but it'll still be insanely low...?

Mathematically, 93mm pistons on 63mm crank will increase torque over a stock Z7U by about 5%, increasing to 73mm stroke on 91mm pistons increases torque by 15%, all other things remaining equal.

The liners are all different locating diameters ....7ZU is 96.48 ....Z7W 97.68 What are the 3l NA ??
What are the 3l N/A ? bore 91 or 93 .....

3 litre engines are all 93mm x 73mm stroke (72.7 on the laguna for no reason anyone's been able to explain)

I don't know why there're two 91mm liner sizes. I do know that although the manual talks about the different liner id (identified by notches in the body) that are matched to the pistons, I've never seen a liner that didn't have 2 notches.

One of my turbo engines was built into a DeLorean block and liner set... no problems at all

Z6W is the same base location .I know they are bigger on the Z7W as that was the size on the Espace lump I first stripped .
Just trying to get all the ickle bits of info together for a think ....
The Venturi 260 ? Any proper engine spec info around ??
I think I've seen a three notch one ...might even be in the shed .

2849cc, 260hp, 298ft-lbs. Runs bespoke ECU but looks like a Z7U apart from bigger injectors. Apparently they made their own pistons and dropped in a 73mm crank.

Apparently ???
Must be some info somewhere ?

Well to get 2849 from a Z7U it's either new pistons, rods or both. It's definitely a modified Z7U

Aiiii Pistonheads article



More Power

Typically of the sports car buying public, Venturi customers called for more power. Though a Lyon dealer had previously offered a kit raising power to 250 bhp, the factory remained indifferent to the customers' demands.

We would have to wait until 1989 for the arrival of the first officially upgraded Venturi: the 2.80 SPC ('sans pot catalytic' - without catalyst). The Renault turbo engine was enlarged to 2,849 cc by EIA who also reworked it from the inside to develop 260 bhp. Even more important, the 2.8 V6 now delivered 296 lb-ft of torque at an incredibly low 1,750 rpm. Externally the SPC could be recognised by its roof spoiler and lowered suspension. Total production of the 2.80 SPC numbered 60 cars, before it was replaced by the 260 APC ('avec pot catalytic'). Power output was identical though at slightly lower revs and smidgen higher.