if you do a complete engine, tranny,t/case swap then it is a direct bolt in with the possibility of having to cut the tunnel cover hole back 3" from center and using the driveshafts stubs from the 75 series. of course you do have the 24V BJ42 elec to bolt onto the BJ75(unless it too is 24V)Sthlm said:Thanks for your quick reply Wayne!
The reason I am asking is that I am thinking of fitting an engine from a BJ75 into my BJ42 instead of having someone rebuild my present engine. But I am just not sure how much work is needed to swap the BJ75 engine in.
since this is foreign models i will step back. my guesstimate is they will share the same gearing in the tranny,t/case but other parts of the world could have gotten different configurations.Sthlm said:They´re both european spec 24v vehicles so that won´t be a problem. Is the gearing in the gearbox and transfercase the same?
Did Europe get the 12V BJ70 in 1985 as well as Canada? At least you did not get the evil center tap system to run 12V headlights?Tonito said:But most BJ7x have a 24V electric-system - I thought the 12V version is limited to the 1985's BJ7x!? greetingz
What gears do you mean are coarse and fine?crushers said:gears are fine spline vs coarse
cams are different
crank is different
alum bell housing vs cast steel
the idler shaft will be bigger in the 70 series than the 42 series.
i "think" the shift tower is different between the 42 and the 70 series, the 42 is 3" futher ahead
I am pretty sure the 42 (83/84) are the same tranny mount as 70 series)Greg_B said:What gears do you mean are coarse and fine?
The boss's should be there, just not drilled out for the braces on the aluminum bellhousing. You can interchange them. A local fellow put a 1983 3B into a Cdn 70 series, and maintained the aluminum bellhousing.
Is that the t-case idler you are talking about and if so are you saying the rebuild kit for an 86/87 70 series would be different than and 85 70 series?Greg_B said:If memory serves the idler increased in 1985/10, so anything before that is 34mm. All bets are off with foreign market as Wayne says. As a rule anything after 1985/10 will be 38mm, but something is telling me there is one application that used the 34mm for a while(I just can't remember what is was).
I just did a 60 series H55F and an 85 H55F and the shift towers were the sameGreg_B said:The shift tower is 3" different between the H55F 40 series and 60 series. I believe the tower between the 60 and 70 are the same.
Check to see if the 7* series is vacum shift or not. I do not know the dates for change in Europe. rick_d posted up some part numbers, in conjunction with Beanz, that would let you swtich to manual shift from vacum, without having to change the t-case.Sthlm said:Are there any differences between the 3B engine in a 70-series and a 1983 BJ42? My engine is consuming serious amounts of oil and I am thinking about buying a second hand engine for it. Is the transfer case and gearbox the same(theyre both 5-speed)?
Yes, the t-case idler. I am stretching my memory this early in the morning with no Java. Always a good idea to measure the idler when you are going to order a kit, just to make sure a PO did not change something out. I "Believe" it was 1985/10 the big swtich to 38mm happened...but hey, I thought the Cdn spec 86/87 BJ70 did not have a stock converter to run a 12V radio, so what do I know...tlcruiserman said:IIs that the t-case idler you are talking about and if so are you saying the rebuild kit for an 86/87 70 series would be different than and 85 70 series?Michael
Damn...I need a coffee.tlcruiserman said:I am pretty sure the 42 (83/84) are the same tranny mount as 70 series)Michael
Greg_B said:Damn...I need a coffee.
The aluminum bellhousing clocks the transmission slightly, so while the rubber transmission support bracket may look the same, if you look closely you will see the transmission is clocked differently (off the horizontal plane). Cast iron clocks the transmssion pretty much horizontal, while the aluminum moves one side up a little (I believe it is the right side).
I have a 60 series cast bellhousing with the tach boss that's headed for the bin if you need it.tlcruiserman said:I was going to put the bellhousing from a 70 series in my 42 series so I can use the pickup for a tach from the 70 series. Maybe I will have to rethink it.