The Golden Rules - break at your own peril

vocky

I still rev my 2.5 to 7900rpm, the rod ratio is even worse than a 2.2 :eek:

Which is why I had the bottom end zero balanced (y)

evocarlos

vocky said:
I still rev my 2.5 to 7900rpm, the rod ratio is even worse than a 2.2 :eek:

Which is why I had the bottom end zero balanced (y)

nount like a bottom end thats balanced for up to 14,000 rpm 🙂
my piston speed will be 25.227mps 🙂

David_Dixon

Revs kill con rods not really power...although more revs in most cases do usually mean more power!
There's plenty lads in the states seen more than 280fwhp... but again that's down to the tune as well, if you have a rough ass map then it's going to take it out on the weakest parts of your engine.

Gold or bust I say :LOL:

evocarlos

bust it is then lol

David_Dixon

haha in the end it will 100% ....the question is "how long will it hold out" :LOL:

chill

What is your B207 piston rods etc rated to Carlos

evocarlos

chill said:
What is your B207 piston rods etc rated to Carlos

rod and piston combo up to 900hp not that i would ever get that far on a cast crank think 600hp on the crank would but the limit or bust lol

Dave_Gilbert

Can you imagine 600bhp to the front wheels hahaha.

evocarlos

Dave Gilbert said:
Can you imagine 600bhp to the front wheels hahaha.

im sure my gear box would have a fit long before 600hp lol

Dave_Gilbert

Im sure you could get a dog box built. They should be good for 600hp

evocarlos

Dave Gilbert said:
Im sure you could get a dog box built. They should be good for 600hp

naaa lol just going to fit a stronger 6speed box 🙂

chill

Can I ask what was printed on your Pistons and do you have a pic of the shape of them
My engine is a b207 el but I heard a rumour they have same internals

evocarlos

chill said:
Can I ask what was printed on your Pistons and do you have a pic of the shape of them
My engine is a b207 el but I heard a rumour they have same internals

im running forged now 🙂
not sure on the difference between them thought it was the cam profile and the actual turbo and injectors

heres a pic of the b207r pistons best one i have of the markings

and the shape of the under side

chill

Looks like there identical

David_Dixon

Dave Gilbert said:
Im sure you could get a dog box built. They should be good for 600hp

Dog box is where it's at if you are worried about them breaking...that said though the F23 will take a shed load of power! Vauxhall's strongest box in my opinion.

evocarlos

David Dixon said:
Dog box is where it's at if you are worried about them breaking...that said though the F23 will take a shed load of power! Vauxhall's strongest box in my opinion.

mines crying at the moment lol has been for the last 30k the input shaft bearing is buggered and the syncros on 1st 3rd revers are shot
was going to get it fixed but im just waitng for it to pop lol

David_Dixon

Sounds like a dodgey one that! We haven't managed to break one yet and it's not for a lack of trying ha ha.
In general though they seem stronger than the F28 under a lot of power....going off the states and a hand full of people over here

evocarlos

f23 and f35 over there the f35 is a bad one almost as bad as the m32 lol
tbf the gear box on mine has been a pain since day one with bad cold shifts and sloppy shifting a common trait
with the f23 from a certain date its got me 68k miles so far lol going to see whats left in it then get the f40 in there

David_Dixon

The F40 isn't a bad box but I guess it's down to preference which to go for, it's the F23 for me! the M32 isn't wroth a light imo, we broke a brand new M32 from the factory within 1500 miles (n)

evocarlos

well i need the 6th gear for driving on the roads 🙂 and i dont think theres an astra with an f40 yet so theres that to 🙂

« Previous Page Next Page »