Vintage man wrote: ↑Wed May 10, 2017 6:57 pm
Yip according to Google and my counting ribs incorrectly it's a 6 rib , I'm sorry but very raw at this appreciate you guys bearing with me. So how is a 6 rib and a 17000
Will be fine, but you MUST reduce tyre size.
Will find you a tyre comparison chart to work out which tyre will work best.
1952 Split Beetle 1835cc
1968 Fastback 2Lt.type4
1972 Low Light Bay Panel Van 2Lt type 4
1975 Fleetline Panel Van 1914cc
2020 MeFusco Beetle Truck 2Lt type 4
1972 FT Hahn SP 1776 cc
Vintage man wrote: ↑Thu May 18, 2017 4:54 pm
Still on engine advice,how much of a problem is it if the top fin of a barrel is broken ,the fin closest to the head.
Don't worry, it's not a fatal injury.
Obviously it has a small effect on cooling efficiency, but you're unlikely to be able to measure the effect unless most of the fins are broken.
fig
Kaapse Kombi Kult
"Whether you think you can or whether you think you can't, you're right." -- Henry Ford
If we "over- simplify" our thoughts, we may think that the fan will turn slower, causing reduced cooling.
But also remember that the smaller 1700 will pump less fuel/air mixture than the 2L, generating less torque and less waste heat. While still having the same large cooling fin surface area, large oil cooler, and same type 4 fan which pumps more cooling air than a type 1 fan at similar engine rpm's as per VW's specs.
It will be slower in 4th gear. If you load your kombi with 800kg it will be more difficult to pull away in 1st on a steep uphill.
6-Rib box compared to 1600 3-rib has around 15% taller gearing 1st to 3rd gears, but only 8% taller overall gearing in 4th. 1700 Has around 7% more torque than 1600.
At JHB altitude there is 17% loss of performance because of thinner air.
Always critically important to have a well sealed engine compartment to prevent recycling of hot used air back into cooling fan's intake. In my humble opinion more important than small differences in gearing.
Staying Aircooled is so much nicer.
Do'nt assume anything- (While doing fault-finding).
There is a much simpler solution to all of this. All you need to do is change the bellhousings and input shaft between the 3 and 6 rib gearboxes. No hauling out angle grinders and swapping tyres etc.
Fit the bigger 2L bellhousing and longer input shaft onto the 3 rib box, that's it. Then you will have a gearbox that has the top hanging mounts and the lower 1600 ratio. FYI, a 1600 motor works fine on a 2L bellhouing. It is just critical to make sure, you have a 2L bellhousing, longer 2L input shaft and 2L starter motor with longer bendix.
I personally though would rebuild the 2L motor which has substantially more power compared to the 1600.
Thanks for the feed back ,yip my 2L is at the engineers at the moment but will take some time,my ass is burning to drive around in the kombi ,maybe i must be a bit more patient ,my son is doing an awsome job with the interior ,we have been taking pictures and will do a bit of a build story soon.
Vintage man wrote: ↑Tue May 30, 2017 12:46 pm
Ok got the 3 rib gearbox in my bus ,motor ready to go in.I you you fit a 2l to a 3 rib what would it be like.
Again, make sure what bellhousing is fitted to your 3 rib gearbox now?
As the 3 rib gearbox has lower ratios than the 6 rib, it will give the bus more pulling power with the 2L motor, but with higher rpm at a given speed. For any normal conditions, the combination works fine.
Couple of things to remember and to look out for before fitting engine.
Is the spigot shaft correct length for your box so that the shaft will enter the needle rollers in the flywheel.
Is the starter bush in the bell housing still usable or is it oval.
Have you got the correct starter to fit or must you make a 10mm spacers (cut the old front plated off a broken starter and cut to 10 mm thick)
These will effect your bus, best address them before driving off.
Herman
1952 Split Beetle 1835cc
1968 Fastback 2Lt.type4
1972 Low Light Bay Panel Van 2Lt type 4
1975 Fleetline Panel Van 1914cc
2020 MeFusco Beetle Truck 2Lt type 4
1972 FT Hahn SP 1776 cc
Vintage man wrote: ↑Sat Jun 03, 2017 4:46 pm
Afternoon ,1700 engine in and 3 fin box however not started yet,noticed that both cooling flaps have been taken out .Will it be ok .
It will not be ok. Your left one is very important as it guides/directs air to you oil cooler. Without it, air will simply blow past the cooler.
