emwmarine
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| posted on 16/9/12 at 08:55 AM |
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quote:
Originally posted by chillis
quote:
Originally posted by gallons perminute
Chillis. We had lots of issues with the pistons. The lands between the rings in particular burnt away. Any idea why? Ford had CR issues at the time
of production and reduced the CR with a thicker head gasket as a stop gap before altering the heads. Why was this? It has a smashing head, as good as
a BDG etc but the bottom end is so heavy and seems over engineered compared to other engines about at the time. Do you have any idea why they went the
way they did on the block? It always seems strange that they went with a chain drive rather than a belt. Any idea why?
The Galaxy 2.3 with the idlers in the sump is a brute of a thing. Were the shafts added because there was serious vibration issues? I used that
engine in a minimilist sports car and it went well although the extra weight was and change to the induction plenum ment we had to re design the
chassis.
GPM
Which version? I did encounter issues with the 2.3 piston lands but then we were doing pre ignition surveys at the time -most engines don't
like full power at +8 degress of advance over base on a top limit CR engine.
Chain drive is considered more accurate than belt drive, the duratec is chain drive, the latest vauxhalls are as well.
Yes the engine does seem heavy but it was meant as a pinto replacement and is no heavier.
As for the vibration issues they were a bit over exagurated. We had to put them in the transit version only because there was some contract between
ford and cosworth who made the ballance shaft kits! They cost more than the transit van profit margin and for the first time since the transit
launched in 1967 it made a loss
The dohc performed better in its durab. sign off tests than everyones beloved zetec. The black top (cost down) zetec has chocolate pistons as well and
cronic cooling issues. (they came back to haunt us on the RS focus)
What made me decide to stick with the Zetec was talking to the people at DJ who said that the vibration seemed to cause more exhaust breakages than on
any other engine they had installed into the Rush. Now I know that could be down to installation but it I will bite the bullet and get a cat put in my
exhaust and get ECU etc.
At least I should have 160 bhp out of the box.
Building a Dax Rush.
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gallons perminute
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| posted on 16/9/12 at 10:05 AM |
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Chillis,
Thanks for the info. We used RS2000 engines. We tried for a similiar spec as the Escort rally cars but although we got good power we did not manage
good levels of reliability.
I am not an engine man and picked this engine because it was easier and cheaper to source gearbox adaptors than get new ones cast. With hindsight it
was a big mistake because the XE became the norm and we were left behind.
GPM
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