mk1 sport engine v mk2 sport engine

Post Thu Mar 24, 2005 1:59 pm

hi all
i was just wondering if the mk1 sport engine has a higer compresion ratio and most say feels quicker.then surely it produces slighlty more power then the newer engine?
also can the older engine be fitted to the newer plastic bumper models?

Post Thu Mar 24, 2005 2:08 pm

Older engine has higher compression, I think its 9.7:1 whereas the later engine is 8.8:1

The greater power is felt on the road and is shown on the dyno aswell.

We have had two dyno days at Bexleys and everytime the early cars have given a minimum of 170 bhp.

JonB in early 325i sport withh 200k!!= 170 bhp
Andy P with early engine = 175 bhp
Ant with Early sport = 173 bhp and then 177 bhp
MoleE30 early sport = 174 bhp.

Even the modded later cars never made 170 bhp. That includes chips, exhausts and filters.

Hope this helps with whatever your thinking.

Post Thu Mar 24, 2005 2:12 pm

ive raced a few examples of both now in my 2.7 and u can tell the earlier cars look quicker

Karan

Post Thu Mar 24, 2005 4:16 pm

I bet some of them arent far behind yours Karan.

Imagine if they had 10.2:1 CR!

Post Thu Mar 24, 2005 7:22 pm

M5pilot wrote:I bet some of them arent far behind yours Karan.

Imagine if they had 10.2:1 CR!

no mate i waste them!!! theres still nearly 50hp difference remember..

car feels quicker now with new ngk plugs and cap.rotor change.... it fookin flies and pulls very hard now at higher rpm.. it doesnt let off like it used to at 5.5k rpm

Karan

Post Fri Mar 25, 2005 1:27 am

thanks karans that was nice to know
now question is will old engine go in my 91 touring

Post Fri Mar 25, 2005 1:37 am

Karan wrote:
M5pilot wrote:I bet some of them arent far behind yours Karan.

Imagine if they had 10.2:1 CR!
no mate i waste them!!! theres still nearly 50hp difference remember..

car feels quicker now with new ngk plugs and cap.rotor change.... it fookin flies and pulls very hard now at higher rpm.. it doesnt let off like it used to at 5.5k rpm

Karan

Remember your driving style is somewhat extreme, not everyone pushes their car to the absolute limits like yourself.

Your car has 220bhp? So you finally had a dyno done!

Post Fri Mar 25, 2005 11:54 am

all the M20s are interchangable dude, the early engine will fit the later car with a loom swop and the waterpump changed, dont forget to do the cambelt whilst its out and fit the later front lower timing cover and pulley, you'll need these to run the front miounted crank trigger.

HTH

Karan, NGK all the way mate, no bosch wrongness

Post Fri Mar 25, 2005 11:38 pm

M5pilot wrote:
Karan wrote:
M5pilot wrote:I bet some of them arent far behind yours Karan.

Imagine if they had 10.2:1 CR!
no mate i waste them!!! theres still nearly 50hp difference remember..

car feels quicker now with new ngk plugs and cap.rotor change.... it fookin flies and pulls very hard now at higher rpm.. it doesnt let off like it used to at 5.5k rpm

Karan
Remember your driving style is somewhat extreme, not everyone pushes their car to the absolute limits like yourself.

Your car has 220bhp? So you finally had a dyno done!

note the 'nearly' Sal, u do like ure dyno figures dont u...

im going pod nxt saturday possibly....... will let u know the figures that matter...
no time for dyno at the moment....
Karan