1600, 1800 or 2L in a D/Cab???

[hendriks]

Can anyone point me in the right direction please.

I am looking for the best option on my double cab with regards to the gearbox and engine.

I am planning to use the dc on camping weekends and open road holidays. So the dc will either have a load on the back or a small trailer to accomidate camping gear...

I am looking for a (as far as possible) reliable combo, 100-110 km/h open road (If possible). What combo would give me the best fuel consumption (estimated consumpton)

I was wondering it there are any 5 speed gearboxes that can be used with an aircooled motor? Or is it better to take a gearbox to get the gears changed to a longer 4th?

Thanks in advance for any info!!!

[fig]

The Type 4 engines should give better fuel consumption because they don't need to be driven at wide open throttle all the time like the type 1 engines. If you read the original CAR magazine road tests, they recorded lower fuel consumption on new type 4 engined buses than type 1 engined buses.

The standard fourth gear is already an overdrive. If you want longer legs you need to look at the final drive, ie, the diff ratio.

For cruising at 100-110 you don't need to change the transmission; both type 1 and type 4 engines can do that. The type 4 engines hold their speed better up hills, while the type 1 will slow down.

Type 1 engines are cheaper and simpler to maintain and repair than type 4.

[Dawie]

Like Fig said.

If you have a late baywindow, the engine compartment tin should be correct to seal around a type 4 engine, and there should be a top mounting for the gearbox. The 1800 type 4 engine will be best if fuel consumption is a concern. It has larger valves than a 2litre, and makes nearly the same power. Think 1600 is 37kW, 1800- 50kw, and 2L- 51kW. As tested by Car magazine, the 1800 was more economical. Type 4 engines have larger cooling fin surface area than type 1, larger oil cooler, higher output cooling fan, and an oil filter is standard. However it is important that you dont allow backyard mechanics or volume rebuilders near these engines, and the seal around the engine is critical, as the fan inlet is close to the used hot air outlets below. Otherwise used hot air will just recirculate, getting hotter and hotter.

You could use the 4.57:1 diff ratio from the 2L instead of the 4.86:1 from the 1800. 15 Inch wheels will also help. Try not to use a roofrack or trailer. Your doublecab has plenty of storage space under the rear seat and loading area, and use a cover for the back.

If it is an early bay, it may be simplest to keep the type 1 engine. To use a type 4 there, you will have to cut the engine sealing surround from a late bay body and weld that in the correct position, and make a plan to better support the engine/transmission assembly, as there will be no top gearbox mounting.

[hendriks]

Fig & Dawie,

Thanks guys! This is the sort of info I am looking for. I don't know all the engine info goodies and gear ratios and so on, but this is a great starting point for me!!

I have a late bay 1979. The van had a V6 in at some point so I'll am not sure if they cut body away to make space for the bigger motor. I want to bring it back to an aircooled motor.

The hunt for a 2l gearbox and a 1800 motor begins...

What difference does a good (don't know how to classify a good) exhaust make? I've seen in the UK they often use a "modern" stainless steel exhaust. I quite like the look, but if it is useless then it is not worth further investigation...

[Bugger]

HI As our discussion today and as Dawie said 1800 is a lekker motor but to get bearings(B/E) and rings are more difficult to find than 2L parts
I would get a running 2L and when it is time to recon fit 1800 valves in as I always done
Then you can also play with I think there was 4 different intake manifold lengths determine where you want usable power
Sarel Wagner has the software to give accurate info re the use of the different intake manifolds