Main Bearing support plate differences.
#1
Elite Member
![](/mt2011/images_td/ranks/supporter1.gif)
Thread Starter
Join Date: Jul 2005
Location: Anacortes, WA
Posts: 2,478
Total Cats: 144
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
I Took apart a 95 Protégé motor.
I was surprised the MBSP could be connected to all 5 mains but just like the miata it doesn’t have the holes cast in the center cap so it wasn’t.
I wonder if the caps are machined close enough that you could use a cap from a different block to connect all 5 mains. I have no idea what that would improve but I thought it interesting.
Miataroadster is selling a modified one to connect to all 5 mains. But you have to use billet caps and line bore the block. It would be a fortune to do.
Bob
I was surprised the MBSP could be connected to all 5 mains but just like the miata it doesn’t have the holes cast in the center cap so it wasn’t.
I wonder if the caps are machined close enough that you could use a cap from a different block to connect all 5 mains. I have no idea what that would improve but I thought it interesting.
Miataroadster is selling a modified one to connect to all 5 mains. But you have to use billet caps and line bore the block. It would be a fortune to do.
Bob
#2
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
I Took apart a 95 Protégé motor.
I was surprised the MBSP could be connected to all 5 mains but just like the miata it doesn’t have the holes cast in the center cap so it wasn’t.
I wonder if the caps are machined close enough that you could use a cap from a different block to connect all 5 mains. I have no idea what that would improve but I thought it interesting.
Miataroadster is selling a modified one to connect to all 5 mains. But you have to use billet caps and line bore the block. It would be a fortune to do.
Bob
I was surprised the MBSP could be connected to all 5 mains but just like the miata it doesn’t have the holes cast in the center cap so it wasn’t.
I wonder if the caps are machined close enough that you could use a cap from a different block to connect all 5 mains. I have no idea what that would improve but I thought it interesting.
Miataroadster is selling a modified one to connect to all 5 mains. But you have to use billet caps and line bore the block. It would be a fortune to do.
Bob
Thread
Thread Starter
Forum
Replies
Last Post
shlammed
Miata parts for sale/trade
3
02-26-2014 08:52 AM