<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Kataku2K3 &raquo;</TD></TR><TR><TD CLASS="quote">All the ITR internals will go into the C1 block no problem... They are the exact same block, no machining required... As for the ITR tranny internals, they'll move over too... The ITR crank is the strongest OE B series crank you can get so I wouldn't worry too much about strength... You're just planning on running ITR pistons to, correct??? There is absolutely no need to shot peen the rods but doing so will make them a tad stronger... The last part blueprinting is what takes the most time and is really the most important... It's checking all clearances to set them within spec... This is everything from bearing clearances, crankshaft endplay, to cylinder/journal taper and out-of-round... That's actually what my favorite part of building a motor is... Just making everything ABSOLUTELY PERFECT... Good Luck!</TD></TR></TABLE>

Kataku2k3,
Do you have a shop? or do you just build motors yourself on the side?

 

No, I basically just build motors on the side... My friends' own a shop and my other friend Scott (that I starting swapping/building motors with when we were 15) has worked there for 3 years now... He got taught everything while I learned on my own but oh well, we both know the same stuff now... He helps me if i have a problem, I help him if he needs it... I go in and help out every once and awhile but since I'm at school an hour and a half away from home I can't really work right now... I'll be there during the summer tho... Okay enough of my boring story, haha... If you are interested, the shop is Ground Zero Motorsport ( http://www.groundzeromotorsports.com &lt;-- the site sucks!! )... Peace

 

really cool, yea I'm going to run JDM ITRs... so can I just basically everything from the short block then? like the oil pump, water pump, block girdle everything??? If I run everything from the itr block except pistons but with jdm itrs, do you think I need to get it rebalanced again? If you go by the helms manual on the clearing issures on bearing clearances, etc it's considered a blueprinted motor??? are factory motors blueprinted? Man all that measuring is going to be hella time comsuming am I right? thanks

 

Yup everything that goes on the comes from the ITR motor can go on to the B18C block... I really wouldn't bother moving over the girdle/main caps since they will probably require a little milling to be dead on... Basically for the same reason that you don't wanna interchange cam caps... Every motor is a bit different... I really wouldn't bother rebalancing the ITR crank and rotational assembly since it is factory balanced... It's not as perfect as could be but it's pretty good... I guess it just depends on how extreme you are going when building this motor... If it's just gonna be a normal naturally aspirated motor reving within "standard limits" (say ~8200-9000rpm +/- some) then you'll be absolutely fine with the stock balancing... As for the a blueprinted motors clearances... Assembled at Honda the clearances are ALL within the specs (pretty close)... When I blueprint I use 2 micrometers (big and small ones) and a dial bore gauge... With these 3 tools you can find the thinkness of an object (crankshaft, etc.) and also the inner diameter of a journal/cylinder etc... This is just for reference, the stock specs for main bearing oil clearances (no. 1, 2, 4, 5) on all B series motors is 0.0009-0.0017inch and a bit looser on no. 3 at 0.0012-0.0019inch... I try to keep no. 1, 2, 4, 5 at 0.0015inch and no. 3 at 0.0017inch on an N/A motor... This doesn't put them dead center but rather a bit loose while still remaining in spec... After finding bearings can be determined... Same goes for rod bearings etc... It's not that critical that everything has the EXACT same clearance but like I've said before when I build it has to be ABSOLUTELY PERFECT, just like wiring Well hope this helps and let me know if you need anything else... Latez

 

hey thanks a lot for clearing me up on blueprinting... So you said I shouldn't change the cam caps? what if its a type r head, dont I just use the cam caps from that head, or from my gsr head? Do you know if the itr's oil pickup/oil pump and oil pan will work also for the gsr block? Do you know where I can find more infomation on rebuilding motors about the clearance issues? Hey I'm going to get the crank polished $30-80 and the block hot tanked, bored and honed $60-80. Anything else I should look into? thanks

 

Yea you're absolutely right on the cam caps... If I wasn't really clear, sorry... It is always best to use the cam caps that originally came on that specific head... If you chose to use the ones from your B18C1 (P72) cylinder head you would most likely have to have them milled to spec as to achieve the correct oil clearances... So for your ITR head use the cam caps that came with it... B18C/1/5 blocks are all the same and the oil pump, pickup, and pan bolt up just the same... The entire ITR bottom end is the exact same as the GSR besides crank (which is stronger and factory balanced), rods (just stronger), and the pistons which have a tetra methyl skirt coating along with more dome (higher compression)... For finding out clearances the best thing is a helms manual... I don't personally own one but if I forget a spec once and awhile, I barrow a friend's manual... I'm just double checking you here... Are you using standard bore (81mm) ITR pistons?? If so DO NOT bore your block out... You'll just want it bead honed... If they are OS then it is okay to bore... You don't want to have an 81.25mm hole for a std. 81mm piston... Good Luck and let me know if you need anything else... Peace