i was told to come and post here to get some good insight on blueprinting my h22, i need to know what clearences you guys use and what works best, i want to rev to about 8000-8200 bottom end mods are knife edge,balanced,polished crank,stock balanced rods,balanced type s pistons, all so if any one knows what the actual bearing thickness are that would be a help
i was told that 2point6 could help me out here

 

Blueprinting a motor is regularly for race teams so they can produce motors over and over again with the same specs.

For an every day motor, blueprinting is not really needed and too overhyped. Basically have your whole rotating assembly (bottom end) balanced and you'll be fine.

As far as bearing sizing, get a mic and start measuring.

 

will loosening up me clearences help out, thats what i hear is good so that the bottom end will spin a little better so may be if i go one bearing size biger on every thing but like the thrust bearing i should be fine right

 

"Blueprinting" is not just for race teams who build several engines. When every measurement is taken and written down, this becomes a "blueprint" for any given engine. From that, teams or an individual can use the "blueprint" to make sure all of their engines measure out the same or within a given tolerance. IMO, taking such measurements on any engine build-up will only aid the builder in the event there becomes an issue down the road. This can also aid during a "freshening up". They can go back to the "blueprint" and see what measurements were taken and what had changed over time.

As far as running your bearing "loose", there are trade-offs. Too loose will not build oil pressure, Too tight might not allow enough oil and cause bearings to "spin". Also, the looser a bearing is compared to "stock", will decrease longevity, but free up power so if you build the engine as a race engine (loose) don't expect to get the mileage that factory engines are known for.

 

I know this isn't the right forum or anything, but what setup do you have to get almost 250 whp all motor? Just curious to where I should get started to get that number out of my H22

 

Yup, 2point6 nailed it right on the head. Blueprinting a motor is basically going through and measuring EVERYTHING in the motor and writing it down, and making sure it's all in spec.

I don't believe it to be very practical for most motors, except for serious builds that are raced and where it is very nice to have records to look back upon to see what has changed.

I have also wondered this also: 2point6, what were your clearances like on your bearings? I know you have the bigger crank and still spin it high, and you had talked about using looser clearances before......I'm just curious how loose yours are!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nubs &raquo;</TD></TR><TR><TD CLASS="quote">I know this isn't the right forum or anything, but what setup do you have to get almost 250 whp all motor? Just curious to where I should get started to get that number out of my H22</TD></TR></TABLE>

If you can, use the search function. There are plenty of topics and threads relating to my set-up. If that doesn't work, PM me.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LudeyKrus &raquo;</TD></TR><TR><TD CLASS="quote">I have also wondered this also: 2point6, what were your clearances like on your bearings? I know you have the bigger crank and still spin it high, and you had talked about using looser clearances before......I'm just curious how loose yours are!</TD></TR></TABLE>

I like to run .001" of clearance for every inch of journal size.

 

wow, that would be way different then stock tolerances on the main journals then

 

ok so then i should go with a stock bearing set up to keep the logitivity of the motor up but because my crank with be polished it will give me a little bit more clearence to free up some power so then i should be relitivly close but a little looser then stock, ill measure and blueprint every thing anyways just as a record and to make shure that my builder kept the crank in spec and its not outa wack

thanx