Engine compatibility

physicsfool · November 30, 2013, 01:24:35 PM

with the ATV box in I am driving everywhere at speeds above 60mph. which is killing my mpg. plus i am covering a lot of rather unexciting miles at the moment. so i am looking at the various engine possibilities for my mk2f/3 polo van shell.

Which engine will fit in without chopping the shell? should be reliable and economical

thanks

hayesey · December 02, 2013, 09:09:12 AM

a 6n 8v engine of some kind? 1.4 8v (60bhp) or 1.6 8v (75bhp).

Or actually, a 3F GT engine. 75bhp, very revvy fun engine. Will do 40mpg. Will cost a bit more to get hold of than a 6n engine but fitting will be easier.

Etches · December 02, 2013, 03:38:56 PM

Whats your mpg dude? Mine stays between 38-45 on long trips in the G keeping the revs at around 2.5-3k

physicsfool · December 02, 2013, 04:02:32 PM

I was doing about 38mpg, when I had a gt box running at 60mph @3100rpm

Now I have an atv box on my speed keeps creeping up to 70/75mph @ 3200rpm which is killing my mpg so now I get 28mpg

from my house to uni its 20 miles and I stop for lights about twice. so its not town driving

hayesey · December 02, 2013, 05:17:51 PM

might be best to just buy a mk3 golf tdi for peanuts off ebay.

Etches · December 02, 2013, 05:24:07 PM

What Paul says really. Can't really understand how you've lost mpg going to a higher ratio box. The mrs polo gained economy going from a 4 speed to a 8N golf box and even more to a 8p box.

Andy · December 02, 2013, 08:22:50 PM

Something's not right if you're only getting 28mpg - unless you're flat out everywhere.

physicsfool · December 02, 2013, 10:52:01 PM

Yeah it's frustrating. But filled up again today. Travelling everywhere at 60mph on my fresh tank from today and seeing how it lasts.

Tav · December 04, 2013, 07:10:26 PM

Buying another car or swapping an engine will probably cost more than you can save by doing it?

physicsfool · December 14, 2013, 05:05:37 PM

Pretty certain this is the cause of my crap economy

PeteG40 · December 14, 2013, 08:39:00 PM

What is it?

PeteG40 · December 14, 2013, 08:39:34 PM

Hole in tank!!

physicsfool · December 14, 2013, 09:45:00 PM

Yup, luckily I have a spare that I have covered in por15 and popping on tomorrow. Also one of my coil pack bolts snapped, it had seized to the inside of the coil pack even though there isn't a thread. Is this common?

PeteG40 · December 14, 2013, 10:45:01 PM

yep - hopefully you can slip coil off (plenty of plusgas)
i've had one i had to batter coil in half with a chisel