Hello everyone,

Im building a D16Y8, target 270-280whp... Eagles Rods + CP Pistons, Stock Block/Crankshaft and ACL Race Bearing

Its my first engine build and im having questions about my clearances, this is what i got so far:

http://www.nrteam.org/up/imgsimages/...1clearance.jpg
http://www.nrteam.org/up/imgsimages/...2clearance.jpg
http://www.nrteam.org/up/imgsimages/...d3clerance.jpg
http://www.nrteam.org/up/imgsimages/...4clearance.jpg


The mains clearances are good ?
#1 0,038-36
#2 0,038-36
#3 0,038-36
#4 0,038-37
#5 0,038-38


The rod clearances are good or too tight?
The #1 rod has a little more clearance than #2,3,4... (0,038 vs 0,025). It´s a problem?
#1 0,038-36 / 0,038-38
#2 0,028-25 / 0,038-34
#3 0,025-25 / 0,025-25
#4 0,025-25 / 0,028-28
(BTDC / BTDC+45º)


Thankz!

 

the rod clearence are to tight. best would be 0.035mm- 0.040mm

 

Thankz for the reply.

That is was i was thinking too.. its better to loose it and shot for 0.0015" (0.035-40mm).

What i can do to get looser clearances?

Micropolish can do that or its too much for polish ?


Thankz

 

Get some different bearings. I think they make acl race bearings that are thinner as well. If youre on the thinnest already, maybe have the rods honed a bit. I wouldnt wanna micropolish a crank

 

Thankz for the reply!

They are ACL RACE..

And i dont trust machine shops here to hone the rods ;(

Im thinking in switch the rods bearings to OEM.. and target 0,038mm (0.0015) for rods..

And keep the acl race on mains 0,038mm..


Thats a good plan?

 

Theres a stabdard acl race and acl race HX. The hx have more clearance

 

i know..

but with the extra 0.001 i will have ~0.05mm of clearance.. too much i think


thats why im thinking going OEM and target 0,038-40max .. what you think?

 

HX are perfect! shim the oil pump and all fine!! d series have to thin clearence from factory. with looser clearence u havent a bearing failure. 0.05mm is perfect for b and d series

 

Thankz for the input!

I think i will buy a HX set an measure..

I got a brown oem bearing today from a friend so i could measure all rods and then order oems from honda, but i dont know if will do...

Thankz