Gotta love big revs on a YB - now with FFD goodness

[CossieRich]

What turbo is on that Magenta cossie?

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[ajamesc]

not all rwd cosworths have traction problems in the dry its all in the set up! a good beam / diff / tyre and suspension set up = no problems

[gibbo frst]

does anyone know why the magenta one has the bearing on the rocker cover rolling on the cam belt..?

[JamesH]

Originally Posted by ajamesc

not all rwd cosworths have traction problems in the dry its all in the set up! a good beam / diff / tyre and suspension set up = no problems

Correct!

[Karl 3dr]

Originally Posted by ajamesc

not all rwd cosworths have traction problems in the dry its all in the set up! a good beam / diff / tyre and suspension set up = no problems

Agreed!

[saph4be]

whats with the extra guide roller on the cam belt on the last video?

[Jasu]

Originally Posted by CossieRich

What turbo is on that Magenta cossie?

Holset Pro52

[Jasu]

Originally Posted by saph4be

whats with the extra guide roller on the cam belt on the last video?

It prevents the cam belt bouncing.

[daz1968]

The size of the turbo in that last vid explains why it comes in brutal and causes massive wheel spin, but defo looks good

[vroooom ptssssh]

am I the only one that think's the first cossie doesn't sound good

Sounds like it's got a screamer pipe? which I hate the sound of

HKS SSQV "BOV" - facking hate them too!

What is it actually revving too? sorry if I missed it in the thread.

I've known a cossie with hydraulic lifters to rev to 8500 and occasionally the lifters would pump up, so i'd definately say solid's are the way to go over 7800ish

[MAD Ade]

Originally Posted by Karl

That last video shows exactly the problem with RWD and big power in a cossie! Very hard to use it effectively without huge amounts of wheelspin!

Not if it's set up properly

Decent rear beam (set up properly) decent tyres, knowing to feather the throttle SHOULD it start to spin the tyres makes pretty good acceleration in my experience

[MAD Ade]

Originally Posted by JamesH

Correct!

You should know mate

[Fezman1]

So what it needed for big revs on a yb?
Std internals balenced or steel rods or what?
Can l6/l8 be tweeked for high rpm or do you have to go aftermarket?

CheeRS Fraser

[MAD Ade]

Steel crank, h section rods, custom pistons, solid lifters, decent valve springs (isky), cams, head work, the list goes on and on....

[J1mbo]

I disagree ade. Standard crank it absolutely awesome. 9200rpm and 710bhp 2.0 we have out there on standard crank, all beit lightweight, knife edged and polished

[bamba]

Love how this sounds.may have been posted before.


http://www.youtube.com/watch?v=TLw0mMLHmIw

[Jasu]

Originally Posted by J1mbo

I disagree ade. Standard crank it absolutely awesome. 9200rpm and 710bhp 2.0 we have out there on standard crank, all beit lightweight, knife edged and polished

+1.

Stock bottom end is fine.

[ozmk1cos]

Whats considered high revs ,before we decide on parts?

[MAD Ade]

Originally Posted by Jasu

+1.

Stock bottom end is fine.

You're both nuts, standard rods and crank, 700+ brake and 9000 prm? I wouldn't want to be running standard rods above 8 grand or above 550 brake....

[ajamesc]

Originally Posted by MAD Ade

You're both nuts, standard rods and crank, 700+ brake and 9000 prm? I wouldn't want to be running standard rods above 8 grand or above 550 brake....

I think the problem is m.a.d power and torque is different to every one elses

[Jasu]

Originally Posted by MAD Ade

You're both nuts, standard rods and crank, 700+ brake and 9000 prm? I wouldn't want to be running standard rods above 8 grand or above 550 brake....

Hah...

Std. rods are very strong, I believe that most H-rods are weaker.

I'm building my own with new original internals (bottom end).
And hoping for +800hp.
I hope it comes alive in summer.

[J1mbo]

Wo wo, who said standard rods? NOT me, standard crank only. We have just done gaz's engine 635bhp on std polish beam rods and would not take it past 7750. That's all they're good for IMHO.

[J1mbo]

Originally Posted by ajamesc

I think the problem is m.a.d power and torque is different to every one elses

haha

[J1mbo]

Oh, and ade, the standard crank design is better than some steel cranks out there, infact most.

[Tarren]

I am enjoying this thread some great info here Gents

[Mark Shead]

Originally Posted by J1mbo

Oh, and ade, the standard crank design is better than some steel cranks out there, infact most.

Correct most thats why choosing the right make is the key and having a custom spec that is know and tested is the best way to use one.

Mark

[J1mbo]

Originally Posted by Mark Shead

Correct most thats why choosing the right make is the key and having a custom spec that is know and tested is the best way to use one.

Mark

[MAD Ade]

Originally Posted by J1mbo

Wo wo, who said standard rods? NOT me, standard crank only. We have just done gaz's engine 635bhp on std polish beam rods and would not take it past 7750. That's all they're good for IMHO.

Quote:
Originally Posted by J1mbo
I disagree ade. Standard crank it absolutely awesome. 9200rpm and 710bhp 2.0 we have out there on standard crank, all beit lightweight, knife edged and polished

"+1.

Stock bottom end is fine. "

This chap (Jasu) seems to think you can take a standard bottom end to to 9200rpm and 710bhp. What rods have you used on the above engine?

Mine's on a standard crank, nothing wrong with it, would'nt dream of continually revving it over 8500 though. Agree the standard rods are reaching their limit at 7500 rpm

[MAD Ade]

Originally Posted by Jasu

Hah...

Std. rods are very strong, I believe that most H-rods are weaker

Your opinion, you'll find out the hard way.

[MAD Ade]

Originally Posted by J1mbo

Oh, and ade, the standard crank design is better than some steel cranks out there, infact most.

Agree, but I'm talking Arrows or the like, yes there is some crap out there.

[Jasu]

Originally Posted by MAD Ade

Your opinion, you'll find out the hard way.

Hah...

You mean that the rods do not last high revs or do you mean that "bad rod ratio"?

[J1mbo]

Rods I wouldn't take to that power Jesu So I agree with ade.

But my comment was the crank only which is awesome.

Jesu. Your rods will break before that power. And the standard 1.66 rod ratio is pretty poor. We run them in the 1.7s or 8s dependant on what cc engine.

I'd advice auto Verdi or arrow rods if your looking or them sort of figures.

[Jasu]

J1mbo, have you seen broken orig. rod?

[gjh]

Gotta love the sound of a tuned YB!

[KSA-Cossie]

Originally Posted by bamba

Love how this sounds.may have been posted before.


http://www.youtube.com/watch?v=TLw0mMLHmIw

Lol at the bird talking about brakes and not shoes or handbags.

[J1mbo]

Originally Posted by Jasu

J1mbo, have you seen broken orig. rod?

Not through power or rev personally.

[JamesH]

Originally Posted by MAD Ade

You should know mate

Certainly mate!

[James-W]

Out of interest and this is just aimed at sparking a debate and hearing tuners views

the 550-650bhp usually quoted as the limit for the rods, where does this come from?

Have tuners tested to destruction, I know its hard finding on different specs with reliability over a certain amount of miles.

or is it a threshold just over rs500 btcc power that is just assume to be near the limit.

Has anyone ever gone to 700 on standard rods reliably?

[Jasu]

Original rods holds over 500hp with orig. bolts and I know that those bolts are weakest link. You can take +700 with orig. rods + proper bolts. However, they do not last forever. Nothing does.

[Fezman1]

http://www.youtube.com/watch?v=yn-ijz1toF0