Engine and Transmission Tech

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What is the meaning of this motorhead porn??Do you have one of these laying around?. Hot.

Thaaaats Graaaaaaaaaate! Just in time for Christmas. One more "Nut-Cracker-Sweeeet", we woun't be gettin! Nic, How's that Coal workin fer-ya?? Come to think... You could have the "Only" coal powered Vega in the WORLD! Bah and Humbug,roverman.

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I remember the big initial splash that these cars made. Group B was intense but short lived.

According to a friend of mine, who was a BL development engineer, there were several 32v RV8s made for evaluation, about the same time the Iceberg diesels were built, with one possibly being written off in a High speed accident on an Autobhan

Iceberg diesel rings a bell. What was that? I gotta say this car has everything I love. Sort of dorky cool muscle. A nasty little powerhouse.

Rover looked into the world of V8 diesels using the venerable old Rover as a base, and increasing the capicity to 4.2l using longer stroke cranks, unfortinatly the crank seems to have been a bit, for want of a word "Fragile" hence the nickname Iceberg, new ones often turn up on EBay, and I think TVR used them for a while, I suppose with lighter pistons and rods the recipriocal weight was lower and the cranks survived in the petrol/gas version,
I would also guess this is possibly the reason the later 4.0 and 4.6 engines had the big journal crank the 4 bolt mains.

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During Iceberg project development Land Rover decided to use an stronger crank with better molecular structure.
In same time they decided to use 2.5" main journal size and 2.1" rod journal. Always with idea to have an stronger crank for diesel application.

When Iceberg project was abandonned old stock of Iceberg cranks was bought by J.Eales and machined to create the 4.2 engine with 77mm stroke crank. This crank was also used in TVR 420SEAC.

They have the other particularities to be X-Drilled and nitrured.

Later Land Rover decided to use also 77mm stroke crank for 4.2 engine in LWB Range Rover Classic. Note this time crank used are not based on iceberg casting and are not nitrured/x-drilled.

The only other application with "Iceberg" crank is the TVR Tuscan Challenge 4.45 engine with this time 80mm stroke (also x-drilled and nitrured). I am pretty sure before in Tuscan Challenge the Iceberg 80mm stroke crank was used in 450SEAC.
I have always one TVR 80mm stroke crank in my garage.



Edited 1 time(s). Last edit at 12/25/2009 03:44PM by Wotland.

Ian, 32v RV8 ? Spy photos Ian, we need them. Did they-perhaps, use 907/912 heads? Unofficially of-course. Just like "Mikes' build, Ian, some beans need to be spilt? "It's only not enough valves when some come-up missing", roverman.

From what I can remember the heads were based around the v6 heads, odd as the original v6 was a cut down and welded v8, also the Jag 220 was a basic 6r4 engine but with Turbos fitted,
Rover must have learnt from this, because when they introduced the K series engine as a 1.6/ 1.8 4cyl 16v engine found in the MGF and Lotus Elise. They later produced a 2.5l V6, the KV6, all the same internals, even the cams would work if you cut off the last 2 lobes off each cam.
You are probably aware the rods from the 6r4 engine will bolt into the 3.5 and 3.9 Rovers without modification, designated by a M in the forging ID, the other rods similar were thr SDi grp A rods, no designation but of a higher nodular material, I think the only way to check is to weigh them,

Sometimes, history repeats itself. Way back in 62' the first, cast iron Buick V6 was born from, you guessed-it, the 215 Buick V8. The theory being, some buyers would demand a 6 cyl. for better economy. Fewer cylinders always = better economy? roverman.