Forged bits, brands and engine build advice

SKINY

Lifer
I was led to believe the 5e was better for boost because it had lower compression
Not something I understand tho :)
 
There isn't realistically a huge difference in a 4e and 5e.

Doing research online, the bigger the engine, the higher cr you can generally run. Not entirely sure why this is as there are other factors involved, not just the size of the engine???

With a 5e, you would get higher static cr by default as it has a longer stroke and the same size combustion chamber as a 4e. Maybe you end up with a similar dynamic cr on a 5e as a 4e with the cam timing?
If you can run cr as high as that with no issues, I reckon I should be good aiming for 8.5:1 static cr???

after a close friend ran their 4efte with 5efhe pistons on the td04l at 20psi on our pump gas...and i must admit it felt lively...i'd never again run an 8.2cr 4efte
i'd be personally aiming for 8.7/9.1 on a 4efte if i ever went back there...the same as i would run on the 5e
we have proper tuning and knock detection equipment nowadays to help keep these engines safe
 

dac69er

Super Moderator
after a close friend ran their 4efte with 5efhe pistons on the td04l at 20psi on our pump gas...and i must admit it felt lively...i'd never again run an 8.2cr 4efte
i'd be personally aiming for 8.7/9.1 on a 4efte if i ever went back there...the same as i would run on the 5e
we have proper tuning and knock detection equipment nowadays to help keep these engines safe
Ha, I won't be using a fcd and rrfpr to tune mine, put it that way ;)
 
It's more the other way round. 5e is higher compression ratio. More responsive :)
exactly...that extra 166cc is nice...lol
i got hooked on 5Es a long time ago..i was fortunate enough to have 1 friend that converted to 5efte ct9 back in the day..one drive in his car and i decided the 5E is the engine for me going forward...i've been running 5Es since 2007/2008 iirc

PS,,the 4efte is a great engine too, it has its advantages...depends on what you want from your car
 

dac69er

Super Moderator
Well I've now got my pistons and rods. Just waiting on some feedback from my tuner regarding cr and then I can crack on from there.

Can't do too much yet though as I need my clutch.......
 

Ouladc

Fresh Recruit
Hello guys.. Would like to know the torque of a 5efhe camshaft and jts diameter compared to the 4efe camshaft plz.. Urgent
 

Calum122

Member +
Well I've now got my pistons and rods. Just waiting on some feedback from my tuner regarding cr and then I can crack on from there.

Can't do too much yet though as I need my clutch.......
SHUT UP!

Who did you get your rods from? I ordered mine back in February and I've still not seen anything????

I'll probably phone up to cancel if that's the case.
 

dac69er

Super Moderator
SHUT UP!

Who did you get your rods from? I ordered mine back in February and I've still not seen anything????

I'll probably phone up to cancel if that's the case.
I got them next day. I just rang up wossner UK and bought direct from them. They were a little more expensive, but I asked about discount and they gave me pretty much the VAT off so wasn't much more in the end.

Their rods are PEC, but they are plenty good enough for what I need.

Called the engine builders today and they are now in the process of notching the block for the rods. I may get it all back before Christmas, just have to cross my fingers.
 
Top