Rod-Tarry

4 of the top 10 speeds ever achieved in a Cossie are with me driving, I could do the next run & hold the record for 10mins I suppose, but I would prefer my son to do that as it would mean more to him than me.
I did set out to create the worlds fastest RS Cosworth following a challenge from Bruce Reid, its now my hobby & I love it, much better than watching the tv or looking at my bus pass.
Please realise im old enough to be grandad to many of the youngsters on here lets see how many have my drive & determination when they are past 60.
I dont need sex every day these days & I also dont need to be the Topspeed driver, you youngsters cant grasp than im sure but its called getting older & I would not change with you guys cos life at the mo is very sweet.

Stu.H

Fair play for using a computer, let alone anything else Rod!

I personally do hope I have your drive and determination in something when I'm your age!!

is all I can say.

jbrayley

That would be mine

NEEDFORSPEED

Steven_RW

I see its business as usual here on PF lol.

RW

NEEDFORSPEED

as always!!

keithcowie

Hi Mike

i wish the above was true

I can only just afford to do this because of all the help a get from my sponsors without them i would have to sell up.

the truck had to go because it used Ł450 of fuel each time to go racing.

Keith

MikeR

Hi Keith,

Sorry i think my point was not made as good as it could have been, l am looking at a stroker engine it is going to cost thousands i do not consider myself a normal working bloke as l earn well above the national average, and l am sure that you probably do as well, that was the point i was trying t make,

If you dont then pm your secret and good luck for TOTB

Regards Mike

Chip

iTrader: (3)

You have to love the name "perfect bore" when so many of the engines they do seem to be so far from perfect.

And all you get if you question it is "we did formula 1 engines"

Didnt they nearly get put out of business by mclaren for having so many failures on their engines?

Rod-Tarry

Answered by PM

JTECH James

iTrader: (13)

did you have liner issues on the last engine then rod? otherwise why change from what worked before?

rapidcossie

the actual block cracked in half the last time

Rod is there now way of bracing the block?

maybe this is why some of the high power cars half fill the water ways with concreate?

JTECH James

iTrader: (13)

i thought it did but the liners were ok?

what would the alloy blocks be like for this level of power? not heard anything about them yet?

i saw an F1 program ion a video i have here, showing the cosworth factory when testing various engines including the rs200 engine, and the block kept changing shape for them on the dyno, so they aborted the projectas they could see it was never going to make the power they wanted for F1 and built a complete new engine which used the main bearing caps as braces across the block which had to be pressed apart to fit the caps with a special tool

the video was recorded off channel 4 years ago ,its called "turbo" once around the block, from a program called equinox

Rod-Tarry

You may be right but the reasoning was this. We tried to machine the block as little as possible, the Mountune liners are very thick the Perfect bore ones are very thin meaning less machining, lets hope it was not a wrong move but mistakes are made when pushing the boundaries.

Jay,

iTrader: (4)

takes some bollox to move away from what you have tried with liner's rod


so do you and mark think thats why the block split last time round because of heavy machining for the mountune items

Mark Shead

We have a good idea why it failed last time but not saying but I am also still using the Mountune liners on other engines.

Mark

Jay,

iTrader: (4)

ah ok ! well you dont learn if you dont push like rod say's so will the car be attempting anything this year or to early to tell ?

JTECH James

iTrader: (13)

i completly understsnd rod! fair play to you

Chip

iTrader: (3)

Given the number of miles it had done, it seems logical to me that by the time of the failure the bearing tunnel was no longer quite in line due to the stresses it had seen, combine that with the fact you are likely to get some movement of the mains caps as they arent very well secured on a cossie and to my mind, it seems likely that the block was experiencing more shock load than it needed to as a result of things not being still geometrically perfect.

Personally I would like to see the addition of a girdle.

However, thats all entirely speculative and im sure Mark has more solid ideas on both the reason for failure and the ways to avoid it.

This latest failure is TOTALLY different as far as I can see, as its a liner fault not a block fault.

Mike Rainbird

iTrader: (3)

This is why Harvey had the liners made by Perfect Bore to his spec (wet liners) and then had the liners put in the block by the guys that do all the machining work for Mountune.







Obviously it is MUCH more expensive from a machining point of view (as the entire original block walls are removed). However, Harvey wasn't happy with the "dry" liner type of fitment that Perfect Bore seem to favour, and his concerns have obviously been proven correct looking at what happened to Rod's engine . The worrying thing is that Martin is also running the same dry liner set up .

Chip

iTrader: (3)

Mike, If it was me and cost wasnt an object I would be creating the 4 liners all from one billet, and inserting the whole lot as one, not just whacking 4 tubes in like that.

Mike Rainbird

iTrader: (3)

This has been proven to work on the 700bhp engine that Harvey recently did, so I think it will be okay for my ickly baby 500 engine .

foreigneRS

if cost wasn't an object, would you start with a ford in the first place?

Carlsworth

thats a good point, and the thing that makes me think "is it worth this massive amount of money and r+d "

would it not be quicker to drop a lambo engine in the saph
cant se the point of wanting to get an outdated shell (i say shell, cause obviously theres not much left of the original saph) to 200mph

carl

Chip

iTrader: (3)

No problem at all on the sort of stuff Harvey is doing, but that doesnt qualify it for the sort of things Mark is doing.
I dont think that would last in Rods engine.


An insert of all 4 joined together from one billet would though I reckon.


Fuck knows till its actually tried on something of Rods spec though of course!

As far as im aware he is going for more torque than has ever been done on a YB anywhere before, so its kind of hard for him to copy anyone else with any confindence!

Chip

iTrader: (3)

If the thing I was trying to achieve was 210+ mph from a YB engined sierra, they YES I would start with a ford.

Mike Rainbird

iTrader: (3)

Chip,
I believe that Mark is going down this route, as he has already stated he is going for the Mountune liners, which are the exact same as I have posted up, but standard bore size instead .

Chip

iTrader: (3)

Well im sure Mark must have confidence in it that I dont then, lol

lead_foot

iTrader: (1)

Just get a YB block machined out of billet.

or not.

Chip

iTrader: (3)

Mike, dont mountune already have an option like im discussing here on their books as a standard option?

Whole centre of the block machined out and a complete insert put in?

RANJ

from memory mountunes liners do have the block walls removed,
im sure i saw them on my old engine


thanks

Zetec_mk4_XR3i

fantastic job guys - best of luck on the dyno

Chip

iTrader: (3)

Read the thread you MONG

Mike Rainbird

iTrader: (3)

I was not aware of that. All the blocks I have seen with Mountune liners have been done in the same manner as I have posted up.

Martin-Hadland

iTrader: (2)

My liners are considerably different to Rods ...

Porkie

iTrader: (1)

He can't read Chip.... he's Scottish

Mike Rainbird

iTrader: (3)

What in that yours have black hole pistons? .

Out of curiousity, how do yours differ from Rods?

APMSLOL

Rippers

Aren't Collins supposed to be making all Alloy blocks?

Chip

iTrader: (3)

If they are based on the YB design of mains cap etc, then fuck using them with much torque!