the older accords were equipped the an a20 with a sucky 12 valve head, but they may have some use still yet. the a20 has a 91mm stroke and same bore spacing as a b series if i remember correctly. It uses an ls rod journal and b series main journals. my question is, has anyone ever messed with them, i guess the only thing left to be question would be the snout sizes? i dunno just thought i would throw it out there

 

oh wow...neat find....anyone else got info?

 

interesting. i wonder if they're like the b20a1 cranks, though, which don't exactly seem to be designed for high-performance. for reference the b18a/b, b20b/z, b16a, and b17a are forged chrome-carbon steel, and the b18c/b16b forgings have higher chromium content. the type r cranks are fully counterweighted and better factory balanced (though a bit heavier) than their non-r counterparts.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by slofu &raquo;</TD></TR><TR><TD CLASS="quote">interesting. i wonder if they're like the b20a1 cranks, though, which don't exactly seem to be designed for high-performance. for reference the b18a/b, b20b/z, b16a, and b17a are forged chrome-carbon steel, and the b18c/b16b forgings have higher chromium content. the type r cranks are fully counterweighted and better factory balanced (though a bit heavier) than their non-r counterparts. </TD></TR></TABLE>

thats all fine and dandy but doesnt answer what he wanted to know...will the crank work in a b series block?

 

jordan i had an a20 in my 87 lude. Also now where an a20 crank still may be if you want to mess with it. And why the **** werent you on halo last night?

 

ok, i'll be blunt. if it's a POS, he might not want to bother trying it, even if it fits. the b20a / b21a crank fits, but requires machine work, and is far inferior to the later B cranks.

 

Actually, I believe the A20 has a 95mm stroke just like the B20A. But if the A20 crank is anything like that crank, machine work is required to make it fit.

 

exactly. not sure on the bore or displacement of that engine, but i assumed that it was like the b20a but with an iron block.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by StorminMatt &raquo;</TD></TR><TR><TD CLASS="quote">Actually, I believe the A20 has a 95mm stroke just like the B20A. But if the A20 crank is anything like that crank, machine work is required to make it fit.</TD></TR></TABLE>what kind of machine work do you need to do to the crank B20a, it don't just drop in???

 

UM no fellas your both wrong on the stroke. the stroke of the a20 is 91mm and 82.75 bore. the engine your thinkin of came in prelude but its an a18 which=95mm stroke and 81mm bore. and the b20a crankshaft you are referring to does need modifications of the snout to work but also the rod journals. the a20 rod journals are the same as an LS. so really nobody has helped me out here, really the only question i could think of would be the snout.

 

the a18 came in the dx prelude and the dx accord, it was a carburated motor. the a20 came in the si lude and the top accord, and it was fuel injected. the b20a were **** motors and had nothing in common really with the b series of the later times. like i said next time i go to nashville ill pick up that crank, and we can **** around with it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by eg6cusco10pt &raquo;</TD></TR><TR><TD CLASS="quote">what kind of machine work do you need to do to the crank B20a, it don't just drop in???</TD></TR></TABLE>

As I understand, the B20 crank requires modification to the snout, relocation of the thrust bearing, and reworking of the pilot bearing area.

 

bump for some answers.

 

sorry to bump an ancient thread but I am curious about this as well

 

I use to run a B20a 95mm crank, the mains were the same as LS but the rods journals were larger. The snout is alot shorter than the standard B series, so I used a stock GSR pulley , modified the back of it until it squished like factory. Before I modified the pulley it use to lock the crank, car ran like a champ, this was in 2001.

 

Old thread. My buddy used to run the A20 crank in a b-series LS block. It worked, but he said that it kept killing the thrust washers and crank walking. This was probably back in the LATE 90s when he tried it.

Not exactly sure the reason why, but it did it.

 

more please! very old thread but very good topic. im game.