I have a 1991 coaster rb20 22r petrol . I would like to fit a Toyota 14b diesel from 1989 dyna 300. Can someone tell me if it will fit without major alterations.
Do not start the job if you cannot assess it yourself. It will probably fit OK but it depends on all the little details. What is a major alteration ? There will be quite a few of them.
If I was doing it I would only start by getting the two vehicles side by side with the engine lids off and check every thing step by step. Just having an engine on a pallet from a wrecker is a problem to start with. Gearbox ? tailshaft ? diff ? fuel lines ? wiring ? etc
Jaahn
-- Edited by Jaahn on Monday 30th of January 2017 07:08:21 PM
I think you are better off asking several specialists who do this type of thing.I don't think there is many members around here who have done this or been on the sidelines when a transplant was done.
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PeterD Nissan Navara D23 diesel auto, Spaceland pop-top Retired radio and electronics technician. NSW Central Coast.
Agree with PeterD. If the engine blocks , clutch housings and gear boxes are not the same profiles,don't attempt the job. There are too many side issues e.g. radiator size and cooling capacity,fuel pump pressure ,mount problems and so the list goes on. If you need to move engine mount for e.g. then the welding has to be signed off by an engineer and have paperwork for it. There are just too many pitfalls for the inexperienced.
Done a few along with RTA approved engineer . Each state is different . There are approved engineers on most states sites. KEEP all the paper work and use same person . Depends ? Some family engines can use samebellhousing etc . At least the drive shaft length will require changing assuming the flange plates are combatable ? A good drive shaft shop can work this out though. As said its best to have whole vehicle as donar car .. Can measure , measure measure ! Cut once ! Don't be put off fitting a better power plant though !! Just check everything . Things can be adapted such as using different radiater hoses with stainless pipe between . Etc .
In the handbook for the rb20 it says it will have a 22r motor, which it has, or 11b motor, or 14b motor. Was hoping it would fit OK, but was wanting to talk to someone that has done it. The reason for using a 14b motor is that we have an old dyna 1989 model we don't use with that motor.
Hi warreng, having a donor vehicle is ideal for a conversion. However you said your coaster rb20 22r petrol is a 1991 model. The problem I see is the engine is from a 1989 model. I don't think you can put an older engine with it's pollution standards into a newer vehicle. You can put a newer engine into an older vehicle from the conversions I've done. There may be a plate on the rocker cover of the diesel saying what the pollution standard for that engine is. It think it will have to be at least equal or better than a standard diesel 1991 coaster otherwise you will never pass rego. Maybe something to ask about at your rego office before you spend any money. Hope this helps. God bless. froggos
That engine swap looks like a very good choice, BUT there are registration implications as said already. The answer to that is to speak to the RTA technical dept and/or an approved engineer if you are in NSW. However the 14b is good and if you swap the engine and gearbox and diff, and the cooling system, the mechanicals will probably work out OK. A turbo afterwards would be even better.
It will probably fit OK but it depends on all the little details. What is a major alteration ? There will be quite a few of them.
BUT there are registration implications as said already. The answer to that is to speak to the RTA technical dept and/or an approved engineer if you are in NSW. However the 14b is good and if you swap the engine and gearbox and diff, and the cooling system, the mechanicals will probably work out OK. A turbo afterwards would be even better.
Jaahn 
