Pajero Owners Club of South Africa

Hi all,

I'm on the lookout for an 6G74 to replace mine.
Have been offered an import - guy thinks it's a quad cam.
Waiting for him to send pics and the engine number.

Will this engine work in my 3.5 Auto?

Thanks
Pierre

If your Blister Fender is an SA spec LWB 3.5 then it will have a quad cam (DOHC) version of the 6G74 motor.

There are however different kinds of 6G74 motors that were used in different kinds of vehicles. Some have the engine auxiliaries arranged for transverse front wheel drive installation, so make sure that you know what you are getting.

Thanks for the reply.

The guy with the import for sale came back to me with an engine number and it is a 6G74 like mine but what you saying is there are diffrent 6G74 engines out there and that the fact it is a 6G74 does not gaurentee it being the same so...

1. If the engine looks the same as mine (on face value) and is also a 6G74 would that be OK, or is there something spesific to look for even if they look identical?

2. I also got asked by Engine Den if I have a GDI or a non-GDI. What should I answer is mine is a "normal" South African type 3.5 V6 Blister fender 24 value

3. Would mine be a quad or twin cam - and how do I tell (from the outside).

Thanks
Pierre

The 3.5 v6s are all called 6G74, whether SOHC or DOHC.

If the engine in question looks like yours externally it should be OK. Pay particular attention to the exact routing of the inlet and exhaust manifolds and also things like the location of the engine mountings, starter, alternator and cooling water inlets/outlets.

As I said, if you have a long wheelbase SA spec Blister Fender 3.5, it will have the DOHC motor. The timing belt covers are larger on the DOHC motors than on the SOHCs as they have to cover the two sprockets on the two camshafts per bank instead of only one per bank. The DOHC 6G74 also has a vacuum actuated variable geometry inlet manifold, so you should be able to spot the vacuum actuator and linkage that operates the 6 butterfly valves that alter the induction tract length as dictated by the engine control system.

GDI motors are direct injection petrol motors that were never officially launched in Africa. They are more fussy in terms of fuel quality/cleanliness, but many have found their way onto the continent as grey imports and they seem to do OK. If yours is an SA spec vehicle you won't want the GDI, as the fuel injection and control system for the non GDI motor is not compatible as far as I know.

Hope that helps (my memory is getting a little rusty regarding the V6s)...

Thanks Gerrit - that helped me a lot!

About 4 months ago the bottom pulley (centre connected to crank) came loose. Seems like the bolt holding the pulley and gear together came loose and sheared the pin that lines the gear up with the crank. eCar fixed the problem for me and all went well until last week when the bolt once again came loose and the pulley fell into the engine bay. During the process some of the values were bent.
Result is a costly estimated repair bill including new pulley and gear along with new belt that got damaged not to mention values and head gaskets.
Since my car has 285,000 on the clock it might make more sense to replace the engine now instead of repair (also since a engine swop will take less time of the road).

Will shop around and check specs before I go that route but first I have to fight with eCar to see if they will come to the party...

Cheers
Pierre

Sorry to hear about the hassle, Pierre. The flywheel pulley bolt does indeed seem to be a bit of a weakness in the otherwise pretty solid design of the Mitsubishi V6s.

If you find a replacement motor it might be a good idea to ensure that this bolt, the pulley and the crankshaft nose are in good condition and to replace the bolt with the latest spec part number (do a search on the forum for particulars). Take the greatest care in the torqueing procedure.

It might also be a good idea to change the timing belt on the replacement motor right away. While the front of the motor is disassembled for this purpose you should consider replacing the water pump and tensioner as well. I know it will cost quite a bit, but this will ensure that the rock solid bottom end of the motor can give you many more km of service.

I agree and thanks for the advice!

Cheers
Pierre

Hi Pierre

Any news on your project although 4 years later. I also have a problem with my motor and must make a decision whether to overall or replace with import.

Please advise me

Regards
Wynand

Hi.
Really sorry to hear about your car.
I do have a complete 6G74 engine block in my garage as a spare. Brand New cranck pulley and bolt fitted I also had the oil seal replaced. I still have the invoices of the items purchased and work been done on the block.
In a nutshell, I had the block refreshed but never used.

But a replacement motor might just be lesser headaches or versa visa. I hope you get sorted soon.
Cheers.
Hugen