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View Full Version : Fitted a Derv G/Box to my 180

Alan.F
07-05-09, 07:43 PM
Well as my diff has been whining for a while i thought it was time to do something about it, I was told by a m8 that some 180 owners have fitted diesel boxes so i thought i would give it a try, I think it will improve fuel consumption because at 50mph its only at 1800rpm and at 90mph its on 3200rpm 110mph is 4000rpm
starfire039
07-05-09, 07:45 PM
wider ratio will mean you'll lose a lot of performance surely?
afcbadam
07-05-09, 07:46 PM
is that in 5th. my 180 is a just under 4k at 90. as above, how does it go?
Alan.F
07-05-09, 07:47 PM
yeh thats in 5th m8 it has lost virtually no performance because of the tourque first gear is not as long now thats the only difference i have noticed plus i still have the sound :) as i am doing 140 miles a day in it thought i would give it a try
afcbadam
07-05-09, 07:50 PM
140 miles a day. you should have brought the diesel. lol
Alan.F
07-05-09, 07:56 PM
140 miles a day. you should have brought the diesel. lol

I wasn't doing that when i bought it lol
shroonie29
07-05-09, 08:02 PM
The ratios are quite different after 1st & 2nd.Should be about the same off the mark,but will then lose some performance
(gear ratios rounded off by calculator)

ZS Diesel
http://i63.photobucket.com/albums/h128/shroonie29/ScreenHunter_01May072057.jpg
ZS 180
http://i63.photobucket.com/albums/h128/shroonie29/ScreenHunter_02Apr021231.jpg

Shroon
Alan.F
07-05-09, 08:18 PM
Thats all double dutch to me Andy m8 lol
shroonie29
07-05-09, 08:24 PM
Thats all double dutch to me Andy m8 lol

Basically for the same power & revs 3rd onwards will really slow the car down.look at the rev drops between gears to see & the top speed of the gear what I mean.
if ya look at fourth you'll hit top speed in it.


Shroon
Alan.F
08-05-09, 05:47 AM
Thanks for that Andy m8
Bobdope2002
08-05-09, 06:40 AM
u guys in today up at rsm
Alan.F
18-05-09, 09:06 PM
Borrowed a Scangauge yesterday for my trip to Donny and at a Steady 70mph over 20miles it was returning 41mpg and at 50mph over another 20miles it was 44-48mpg even at 90mph it was 36mpg. I am very impressed with this derv box.
afcbadam
18-05-09, 09:11 PM
thats very good going indeed. wish i could get that. i average about 25mpg with my driving style
shroonie29
18-05-09, 09:15 PM
28 this week,10 mins to motorway,10 mins on motorway the 10 mins of fun :)


Shroon
afcbadam
18-05-09, 09:21 PM
best i have had is 30. constant 75-85 mph
Alan.F
18-05-09, 09:23 PM
I will take a pic tomorrow if i remember lol