7 bolt build is it worth it?

[chasedardis]

First of off this is not a crankwalk walk bashing so saying that. I have a extra 7bolt (92k) block and head nothing wrong just took out to put a 6 bolt in my gst. I checked crank its in spec so that's good. I building a 99 gs 420a to sell got I really good deal (400) for the car just in about a thousand pieces though so im already planning my next build. I want to build a 2g awd next my question is do I go with the 7 bolt or find a six bolt I can save a good amount of money if I use the 7 bolt. My goal is 450 whp daily summer driver. Im just tring to get some input and advice

 

[red_devil]

Since some 3-pc thrust bearing engines have had reports of cw also I would assume Mitsubishi changed the bearing design just to cover there asses. Then again there are so many misdiagnosed cw issues out there that it's almost impossible to find a connection between blocks.

In my case I will be building my engine. I don't know if "JDM" engines have had less issues with cw or not but it may be possible that the casting issues were on American made engines. Even when prying on the flywheel I couldn't get any movement to get a micrometer on it. So I would say if the oil pressure on the block was good and crank is in spec then why not build it. Buying a random 6 bolt block and having no knowledge of its mileage or history can also be a gamble.

 

[ed1380]

doesnt really limit you , the stronger the pressure plate is the more force on the crank due to the clutch not slipping on launches. just try to slip it a little on a launch and should be fine

It doesnt matter if the clutch slips or not. every time you push in the clutch a certain force is placed on the thrust bearings. So by slipping the clutch you keep the pressure on the bearings longer, but if you roughly drop the clutch you're going to break something else.