Engine Performance This section is for discussion on all engine building related questions.
Sponsored by:
Sponsored by:

Main Bearing support plate differences.

Old 06-25-2010, 01:52 PM
Elite Member
Thread Starter
Join Date: Jul 2005
Location: Anacortes, WA
Posts: 2,514
Total Cats: 127
Default Main Bearing support plate differences.

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.

Attached Thumbnails Main Bearing support plate differences.-p1010032.jpg  
bbundy is offline  
Related Topics
Thread Starter
Last Post
Miata parts for sale/trade
09-30-2018 01:09 PM
Cars for sale/trade
10-23-2016 07:58 AM
Suspension, Brakes, Drivetrain
04-21-2016 03:00 PM
Miata parts for sale/trade
10-01-2015 09:17 AM

Thread Tools
Search this Thread
Quick Reply: Main Bearing support plate differences.

Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.