LSV Questions

Waffles · Post by **Waffles** » Fri Jan 20, 2012 3:54 am

If your manually trying to do compression calculations, you are wasting your time. someone has built a calculator.

http://www.zealautowerks.com/bseries.html

there is also a free android one.

5thgen · Post by **5thgen** » Fri Jan 20, 2012 3:55 am

2ksi;284395 wrote:thats what i thought..

so does anyone know what the combustion chamber volume is at TDC on a b18a1?

45cc is the head volume itself (non-milled).

2ksi · Post by **2ksi** » Fri Jan 20, 2012 4:07 am

oooooo, both very helpful posts. thanks guys!

2ksi · Post by **2ksi** » Fri Jan 20, 2012 10:02 pm

does anyone know if the rod journals are the same size on the b18a1 compared to the b16a2?

Gunmetal Si · Post by **Gunmetal Si** » Fri Jan 20, 2012 10:20 pm

i could really get into this deep. however, a lil bit of googling would yield u alot of info.

its in your best interest to use b16(vtec) bearings with the ls build. NO u cannot use the b16 rotating in the ls. deck height is 8mm smaller on the blocks. use ls block, ls rotating with the build. use the b16 bearings and arp rod bolts in the ls rods. 8mm ones go right in.

GOOGLE

2ksi · Post by **2ksi** » Fri Jan 20, 2012 10:27 pm

well if you want to go really in depth go ahead, it might help me figure things out. i have googled alot and not found too much info. my plans are to use the b16 rods and pistons with the ls crank to achieve the 9.0:1 cr instead of using the ls rods w/b16 pistons and getting an 11.7:1 cr. the ls pistons i have are toast. thats why i want to use the b16 pistons and try to work with what ive got. the bearings i would be using are the clevite 77 p series.

Gunmetal Si · Post by **Gunmetal Si** » Sat Jan 21, 2012 12:06 am

ok! let me know how that turns out bro

5thgen · Post by **5thgen** » Sat Jan 21, 2012 12:41 am

I don't see why it wouldn't work.

If he used the b16 crank, then yeah, it'd put the compression ratio really low. What you gain in compression from the head and pistons, you lose in the .1" rod difference.

LS motors come in stock at 9.2 ...... if it does drop to 9.0 that is not bad.

JustRob · Post by **JustRob** » Sat Jan 21, 2012 1:04 am

This thread makes my head hurt. I really don't understand why you're trying to build an engine with random OEM parts. For the money you'll spend getting it together, you could buy a complete B18B1 longblock, add ARP's and be done without the headache.

Boosted_da · Post by **Boosted_da** » Sat Jan 21, 2012 3:06 am

JustRob;284520 wrote:This thread makes my head hurt. I really don't understand why you're trying to build an engine with random OEM parts. For the money you'll spend getting it together, you could buy a complete B18B1 longblock, add ARP's and be done without the headache.

lolz like!