91 BG BP SOHC auto engine to manual box

Old Grey · 21-05-2014, 05:17 PM

Is the bolt pattern on the 91 BG BP SOHC auto engine the same as the BG BP SHOC manual box, so that they bolt straight together.

My car is a std manual 91 BG BP SOHC, but I bought an 140K km auto 91 BG BP SOHC engine as a swap because my engine is worn. I'm assuming that the blocks are the same, but I'm not sure about the sumps. Do I need to swap sumps, or is the auto one the same bolt pattern - it's got a window for the converter bolts -.

Thanks

TheMAN · 21-05-2014, 10:43 PM

it bolts right up

Old Grey · 22-05-2014, 08:32 AM

That's even better, I don't have to swap sumps.

Thanks

21-05-2014, 05:17 PM	#1
Old Grey Junior Member Join Date: Apr 2009 Location: Sydney Car: Astina BG 1991 - Rx7 S4 Posts: 105	91 BG BP SOHC auto engine to manual box Is the bolt pattern on the 91 BG BP SOHC auto engine the same as the BG BP SHOC manual box, so that they bolt straight together. My car is a std manual 91 BG BP SOHC, but I bought an 140K km auto 91 BG BP SOHC engine as a swap because my engine is worn. I'm assuming that the blocks are the same, but I'm not sure about the sumps. Do I need to swap sumps, or is the auto one the same bolt pattern - it's got a window for the converter bolts -. Thanks

21-05-2014, 10:43 PM	#2
TheMAN Senior Member Join Date: Feb 2010 Location: USA Car: . Posts: 2,623	it bolts right up __________________ Protege FAQ, the best 323/Protege/Mazda3 resource enjoyed worldwide for 10 years

22-05-2014, 08:32 AM	#3
Old Grey Junior Member Join Date: Apr 2009 Location: Sydney Car: Astina BG 1991 - Rx7 S4 Posts: 105	That's even better, I don't have to swap sumps. Thanks