I don't know if you're familiar with this replacement camshaft: https://shop.klracing.se/sv/artiklar/k-kamaxel-b20.html It was said to give better torque from low engine speed and still not give you a racing engine, responding well only in the higher revs.   I am not familiar with Weber carb replacements. The civilian B20's normally came with a Zenit-Stromberg and some could be equipped with twin SU's, which gave a definite extra punch to the driving, but I suppose there may be physical limits in the engine compartment that could prevent the use of horizontal carbs.

All good - you are right with that!   My B18 engine is fit, got electronic ignition, a modern carburetor and runs well.   The plan is - a bit more torque - and why should I touch this well running B18 - so my Lappi is now on the road - parallel I want to build a bit stronger engine - and when I`m done - put it in - together with the transmission I got here already and the transfer case.   So I got second full drive set - and when I now have to buy a engine to complete it - it doesnt matter if B18 or B20 - so I like to do this with a B20 - also with electronic ignition, upgrade Weber carb... - so I can swap the complete set - get the papers changed - and can put the drive set with the B18 in stock.    

Please excuse a possibly off the mark comment here.    The B18 can easily be tuned beyond the normal power of the standard 3315 engine. Another carburetter configuration, a different camshaft, a properly rebuilt ignition system or any such alteration could give you power beyond a standard B20. This kind of tuning may (at least in Sweden) be performed without having to put the vehicle through a new registration inspection, and it might be a bit simpler than an engine switch. All of course depending on the original engine being in good condition.

Hi to all.   Since this spring I`m the proud owner of a L3315, which feels well here next to my Amazon restoration and my 244.   I hope - somebody - got documents of a late / one of the last L3315 or L3314 - with a original B20 engine.?   My Valp is in good shape, I already fixed some small things, now I build in new brake lines and hoses, and some other things.   Soon I like to swap the engine from B18 to B20 - not to make it a race car - I like to get a bit more torque - so I can swim easier at german traffic, and it will be easier when I pull my HMK trailer with it.   I like to get the conversion registered by german authorities, because I also like to get a higher towing capacity, than I got now in my papers ( they did a fault in the past and just listed 1000Kg ) Here from this forum I already downloaded documents with 1500 Kg towing capacity - this were from a L3314.   Are there owner of late L3315 or L3314 - with a original B20 engine ?   Could you please send me scans of your vehicle documents? Your name, adress - this can all be covered. Neccessary is to see the hp / kw of the B20 which is higher than the B18 and the listed towing capacity.   The german authorities - just want to see a proof - that a vehicle like my L3315 - could have / had at the last production years a B20 at later versions - than they register my engine upgrade. About the swap - I know that it is simple - because I got a B20 for my Amazon - and its nearly the same engine - I got already here a transmission and a transfer case - so I can prepare everything before I swap it complete.   Greetings from Brandenburg - Germany to you all   Robin  

HI,   are you still looking for the lufor radio? i might have one laying around and some of the parts for installing it