b20a pisons, rods, etc.......

[adams86lxi]

Alright i need some pistons, rings, headgasket and bearings for my b20a so i can rebuild it. I know i can get b20a5 pisons, rings and bearings and they will work fine but does anyone know any good performance ones i could get??? Some that would work good for boost and wont give me reliability problems??? And im basically screwed on the headgasket unless someone has a spare they can sell me or something so thats what i also need to find out.

I went to honda today and for new pistons, rod bearings, and rings its 585$$$!!!

[RobT5580]

$475 for Wiseco pistons/rings from Raceeng in Florida, bearings like $100. Rods you can use other H23 rods i assume since my pauters are made for the H23/B20A5. You might as well get forged pistons since you boosting. I have a stock set of B20A rods and pistons laying around.

[carotman]

Yeah if you'Re going to boost it, forged pistons would be the way to go. ESPECIALLY since you're going to replace them anyway.

If not, Rob and I got spare pistons for you. :D

[adams86lxi]

Yeah if you'Re going to boost it, forged pistons would be the way to go. ESPECIALLY since you're going to replace them anyway.

If not, Rob and I got spare pistons for you. :D


i would love to get the forged ones. I just dont have the cash for them right now, and wouldnt have it for quite awhile and i want to fix my car now. I might have to take you guys up on your offers for your old b20a pistons. Would these be any good at all for stock replacements???

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=7966925011&category=33623&sspagename=WDVW

http://www.importperformanceparts.net/imports/toppistons-honda2.html These are only 118 for 4 pistons and all the rings....

I might just get stock stuff and make sure it doesnt over boost again and get a better fuel managment system instead.

[adams86lxi]

o i just remembered right now. I was going to ask you guys dont b16 and b18 pistons fit in the b20a too??? They both have a 81mm bore. I think just the wrist pin bores, or whatever there called, are a tad bit off?? Correct me if im wrong??

[rjudgey]

Bearings to get would be ACL or sold in U.S. under Clevette i think?
Can someone come up with a definative parts list of high performance rods/pistons that can be used in B20A as i'd really like to know as i want to re-build my B20A for high Performance this summer N/A build not turbo.
Thanks Rich.

[RobT5580]

If you run the B20A5 pistons then you will need B20A5 rods sorry i was misleading up top. The h23 rods will only fit the B20A5 not the B20A ones. I would think the pistons would be ok since ACL makes good bearings from what i have heard. I cant say from personal experience since i only had about 1000 miles on mine and 40 boosted.

[carotman]

Well, I think that the B20A5 and B20A pistons are exactly the same Rob. My B20A pistons have the PK2 stamp on the top and PK2A on the side. I've seen that they are suppsed to be stamped PH3. The PK2 is what's used in the B20A5. Since my engine was built in 1987 qhich is the 1st year of production for the B20A5, maybe they just swapped the parts at the factory.

I'll post pictures of my pistons later.

For the B16/B18 pistons, you need to enlarge the wristpin to make it fit. Nothing major but not every shop is equipped to do that work.

[RobT5580]

Mike Lee tried it and he had to get a set of B20A5 rods cause they didnt work and i assume it was to do with the wrist pin setup.

[carotman]

Hmm, I'll have to doublecheck on this. Maybe my pistons were mated with PK2 rods as well... which would explain why the piston is labeled PK2 just like the B20A4.

Mike lee used a Goldtop B20A and I have a Blacktop. This is really something that got to be investigated.

[RobT5580]

My other was a goldtop as well so perhaps that is a difference between the two. I had a nice black top but sold it because i wanted to be sure both were 100% the same.

[adams86lxi]

if it helps any my pistons were pk2 along with the rods and it was a black top i believe (the valve cover was stripped when i got it).

[carotman]

If you want to make sure iTts a black top, just tell me what are the 3 first digits of the engine serial number :D

[rjudgey]

RIght then Guy's thanks for the info.
So what would be the best combo/value for money setup?
B20A5 rods and pistons? If so what makes (want forged if possible high CR)
B16/18 pistons on stock rods moddified? (do the valve pockets line up?)
I can get the rods moddified no probs i presume they are still just as strong?
B16/B18 pistons can you get them in 82mm? or 81.5mm i need to re-bore as my spare block has slight damage to the bore but i could get it re-sleeved worse case scenario but i'd rather bore it out 1mm for higher CR and bigger CC

Also whats a good cam spec for fast road 275 duration all round 400 thou lift?

Thanks Guy's.
OH BTW ACL bearings are the nut's i never use anything else their also used in Touring car race engines and i've never had one fail on me except the one time when i had ran out of oil for like 50 miles and they were still in one piece bit rattly afterwards but hey got me home!!

[adams86lxi]

OH BTW ACL bearings are the nut's i never use anything else their also used in Touring car race engines and i've never had one fail on me except the one time when i had ran out of oil for like 50 miles and they were still in one piece bit rattly afterwards but hey got me home!!


Where could i find acl bearings for the b20a5????

[RobT5580]

I think raceeng carries them but im sure anyone who carries ACL stuff can get them. I got mine running yesterday but it missed around 3k so i cant really play with it. But i can boost it but i will see what happens otherwise i will have to wait until may for my tuner to get back out here unless he can help me over the phone.

[racerx]

http://www.raceeng.com/showItems.asp?cat=IMP&id=10132331012054433345477711232344784322343236654 55111201132201232012235670343223223234343443223034 44323442344454343266&subcat=PS&Supplier=RACE

9:1 and 10.5:1 sets
The first would probably be ideal for boost since it lowers your CR by 0.4

[adams86lxi]

Yea, i saw those. I would get them in a heart beat if i had the money. I litterly have nothing lol. So i was looking at some stock replacement toplines or something that are supposedly 20% stronger then stock. And there only 118$ for a set with rings.

[RobT5580]

I thought about offering my old set since they are still good if you have them bead blasted and coated but im on a stock bore now so if i screw it up i can use them. I do have another set which are pretty bad but im not sure if they can be fixed or not cause one of them is pretty bad.

[Versanick]

Careful with wristpin size. When the guy at my race shop ordered all b20a5 stuff 9.0:1 comp pistons and such, the new pistons required 20mm instead of 21mm (or visa versa, I forget) That would be something to maybe to research on.

I got my stock (forged, as we know) rods shot-peened and polished, my crank turned and polished, hyper-eutectic pistons (I highly reccomend over forged if you can't afford forged), and new bearings (which need to be properly massaged, to work the best by the way) that had several hours of work into them alone, plus assembly of the bottom end, for $550. The parts shouldn't cost more than that.

the hyper-eutectic pistons are like cast, but they are cast with a 12-14% silicon content, and therefore MUCH harder than stock cast. They also don't expand like forged ones do, eliminating blowby and piston-to-wall clearance calculation. They'll hold up to boost at least nearly as well as forged (since the #1 reason that pistons crack and blow is b/c of improper ignition timing) in proper conditions.

I highly reccomeond hyper-eutectic.

[Neuspeed87lx]

im using forged rods and crank from scat... heard nothing but good things about them.... expensive though ... 1000 for the crank and 400 for the rods... and they have a wide range of applications

[AccordEpicenter]

stock crank is just fine, its forged too.