+- Kombi Club Australia (https://kombiclubaustralia.com)
+-- Forum: Help & Assistance (https://kombiclubaustralia.com/forumdisplay.php?fid=27)
+--- Forum: Bay Tech Clinic (https://kombiclubaustralia.com/forumdisplay.php?fid=8)
+---- Forum: Engine & Transmission (https://kombiclubaustralia.com/forumdisplay.php?fid=39)
+---- Thread: 2litre gear box 1800 engine (/showthread.php?tid=982)
2litre gear box 1800 engine - Monkey - 20-10-2024
Hey guys could be a silly question but I have a 73 bay window with a 1800 motor and was told if I put a 2 litre gear box in it it would be a better ratio and I would get more power ? Anyone heard of this or have any advice. If it is better is it a straight swap over? Thanks in advances
RE: 2litre gear box 1800 engine - Barry - 20-10-2024
Whilst the 6 rib 2L gearbox is a good choice there is a whole world of effort (pain?) changing clutches, flywheel and starter motors.
Better - probably
More power - no. Your motor is the same. But better gear ratios
Simple - mmmm….. not really
Cheap - no
Might be easier getting your 5 rib rebuilt to 6 rib ratios?
RE: 2litre gear box 1800 engine - Barry - 20-10-2024
Oh….. no such thing as a silly question
RE: 2litre gear box 1800 engine - Wayne Murray - 20-10-2024
What type of gearbox you got know in it, as you have an 1800 motor doesn't mean you have an 1800 gearbox?!
RE: 2litre gear box 1800 engine - Orangina - 21-10-2024
Hello,
all of the dimensions changed in 8/1975 from type 002 to the 091 gearboxes (only 15mm in total, but some parts are shorter, others longer) - so there is no easy exchange. it is possible, but not plug'n play. You need to mix parts so the gearbox fitting somehow in your bus.
So I expect you have a CM for the 1.8L type 4 with 4,857 ratio.
A CE for the smaller 1.6L type 1 engine with a 5,375 or later 8/73 5,428.
My late 2L type 4 with CP gearbox have a 4,571 ratio - is not a racer or good for hill climbs, but good for high way - often quieter due to some lower engine rotation speed.
good luck,
RE: 2litre gear box 1800 engine - Tintop - 21-10-2024
hi, go underneath and count how many ribs on your current gearbox...
3 rib gearbox will give you the best acceleration but it'll rev a bit harder on the highway
5 rib gearbox is a good match for the 1800 engine
6 rib gearbox will be slower off the mark but the engine will rev less on the highway (quieter and less fuel)
so it depends how you use your kombi ... I had a 2 litre engine with a 3 rib box and it was great around town (3 rib box needed a different input shaft, bellhousing, flywheel, clutch and starter motor)