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Couple B21A1/B20A5???

 
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Old 05-11-2011, 06:52 PM
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Couple B21A1/B20A5???

OK as my intro thread states I have to swap engines in a 1991 Prelude.CLICKY! My question is has anyone had first hand experience with any of these sites? (I got the list from the resource thread) I just don't want to pony up $1k to a web site and get screwed in the deal. I would like to trust my purchase.

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Sunrise JDM Motors
H-Motors online
Noyan USA
Tokyo Motor Imports
JDM Engine corp
Wildcardperformancemotors
Japan Star motor *free shipping in USA
JDM-Online
Osaka JDM Motors
Nagano Japanse Motors
ImportPowerhouse
ASAP Motors
FNF Motors
JapanDomestic Motors online
Japan General Motors
Japan Motor Imports
Nippon-Motors, Inc.
Japan Direct
JSA Motors
eBay Motors - Autos, Used Cars, Motorcycles, Boats, Trucks, Parts, Accessories, RVs and Other Vehicles
I have came to the conclusion that I don't want more power so the H22 swap is out. (this is for a 16 year old to drive) Looking for a straight up bolt in swap. What is the advantage to putting in a B20 over the B21? I have read that the B21 burn oil but also heard that the B20 will as well? Also anyone have any good parts sites you like to deal with for these cars?
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Old 05-11-2011, 07:13 PM
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Re: Couple B21A1/B20A5???

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Last edited by luzer; 05-11-2011 at 07:14 PM. Reason: double post
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Old 05-11-2011, 07:13 PM
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Re: Couple B21A1/B20A5???

I can't help you with any of those companies. I bought my b20a locally from craigslist. But I can answer your question about b20a vs b21a1. The b20a does not burn oil like the b21a1. The b21a1 has frm (fiber reinforced metal) cylinder sleeves while the b20a has iron sleeves. The frm sleeves are much harder than iron sleeves, and will last a long time. Unfortunately this causes the piston rings to wear faster than they would with iron sleeves. This is why the b21a1 is more prone to oil burning than the b20a or b20a5.
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Old 05-11-2011, 07:19 PM
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Re: Couple B21A1/B20A5???

In addition to what Luzer said the b21a1 will burn oil due to the rings getting worn out. You can replace the rings and it will solve the problem, but keep in mind the b21a1 is a little more of an enthusiasts motor meaning it may require more upkeep than a b20a. If your doing engine work your self then I say it wouldn't matter. If you have a mechanic then I say weigh the costs of rebuilding a b21a1 vs getting a low mile b20a
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Old 05-11-2011, 07:27 PM
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Re: Couple B21A1/B20A5???

Buy from hmotorsonline.com Ive seen tons and tons of honda owners buy from them and be happy. 99% of ppl on this forum will tell you the same thing. Hmotors is the best place to get a motor hands down
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Old 05-11-2011, 07:33 PM
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Re: Couple B21A1/B20A5???

Well long story but the motor is fried.

When it blew up was not due to wearing out but rather a lack of oil. This was a one owner car (my wife's boss bought it new) She sold it to my sister who drove it until the timing belt broke. She gave the car to my nephew and he took it to a mechanic to repair said timing belt. The mechanic not knowing at the time was basically out of business. He put the belt on and when the nephew picked it up he started the trip home when the motor let go. Turns out the POS mechanic never filled the oil back up. Now the guy is gone and no way to get back to him for what he did.

Now my nephew needing money and my son needing a car I gave him $400 for the car and figure put a motor in it to make a decent first car.

OK so from the sound of it I am going with the B20A5 engine. Anything I should know before I start pulling the motor. Remember my back ground has been rear wheel drive engines so may seem like a tard at times.
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Old 05-11-2011, 07:46 PM
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Re: Couple B21A1/B20A5???

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Originally Posted by blackbb6 View Post
Buy from hmotorsonline.com Ive seen tons and tons of honda owners buy from them and be happy. 99% of ppl on this forum will tell you the same thing. Hmotors is the best place to get a motor hands down
Cool thanks I have seen Smokey suggest the same thing.
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Old 05-11-2011, 07:50 PM
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Re: Couple B21A1/B20A5???

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Originally Posted by blackbb6 View Post
Buy from hmotorsonline.com Ive seen tons and tons of honda owners buy from them and be happy. 99% of ppl on this forum will tell you the same thing. Hmotors is the best place to get a motor hands down
So what would be you next suggestion. B20A5 out of stock and B2A1 was not found.
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Old 05-11-2011, 10:13 PM
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Re: Couple B21A1/B20A5???

Awesome found a place that sells these engines less than an hour away.

Welcome to Engineline.Com
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Old 05-11-2011, 11:50 PM
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Re: Couple B21A1/B20A5???

If you go b20a5, beware of the mileage. After 130k, the engine has bad luck with cylinder#3. Mine failed on the way back from Patterson NJ with a transmission for my 3rd gen. If your gonna take your time, now is a good time to rebuild and Torque to specs.
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SURGEON GENERAL WARNING:
THE IMITATION OF ANY OR ALL MANEUVERS EXECUTED BY A BA B20A 4WS PRELUDE IS HAZARDOUS TO YOUR CAR'S HEALTH. DRIVING A PRELUDE MAY CAUSE LOSS OF INTEREST IN OTHER CARS, WOMEN AND SPEED LIMITS. OTHER SYMPTOMS INCLUDE SLEEPLESS NIGHTS, COLD SWEATS AND OTHER SYMPTOMS RELATED TO ADDICTION. IF THE SYMPTOMS PERSIST,DRIVE!
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Old 05-12-2011, 06:06 AM
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Re: Couple B21A1/B20A5???

What causes the cylinder to fail? Is this a commonly know fact about the engines? I haven't read anything about this but as stated before I really do not have experience with Honda's. Does the B21A1 experience the same issue?
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Old 05-12-2011, 02:18 PM
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Re: Couple B21A1/B20A5???

Dont worry, it's just something that may happen. If it makes you feel any better I'm at 195k on my 3rd gen and it's running perfectly. This car hasn't had a good life until I got it btw.
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Old 05-12-2011, 03:11 PM
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Re: Couple B21A1/B20A5???

Cool I just ordered the motor. It should be here next week. I was getting worried a lot of the sites don't have them. My local guy I found told me that they are having a hard time getting parts from Japan because of the disaster. I was like crap there goes my budget if I have to do a total rebuild.
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Old 05-13-2011, 01:15 AM
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Re: Couple B21A1/B20A5???

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Originally Posted by Sideswipe SI View Post
If you go b20a5, beware of the mileage. After 130k, the engine has bad luck with cylinder#3. Mine failed on the way back from Patterson NJ with a transmission for my 3rd gen. If your gonna take your time, now is a good time to rebuild and Torque to specs.
Only if the motor was abused and not maintained. Regular oil changes and keeping the oil level up will prevent this problem from happening.
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Old 05-13-2011, 02:40 AM
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Re: Couple B21A1/B20A5???

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Originally Posted by luzer View Post
Only if the motor was abused and not maintained. Regular oil changes and keeping the oil level up will prevent this problem from happening.
What are you implying? I baby my cars man.

I only had Sideswipe from 165k, basically changed everything wrong, and then the motor blew. My prelude died at 180k, clean oil and shards in the pan, I was too late. After the blown motor, I couldn't recoup. I had no money with no time to fixit, or source a motor. Sucked to be me.

So keep the fluids clean, the right level and don't abuse it.
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SURGEON GENERAL WARNING:
THE IMITATION OF ANY OR ALL MANEUVERS EXECUTED BY A BA B20A 4WS PRELUDE IS HAZARDOUS TO YOUR CAR'S HEALTH. DRIVING A PRELUDE MAY CAUSE LOSS OF INTEREST IN OTHER CARS, WOMEN AND SPEED LIMITS. OTHER SYMPTOMS INCLUDE SLEEPLESS NIGHTS, COLD SWEATS AND OTHER SYMPTOMS RELATED TO ADDICTION. IF THE SYMPTOMS PERSIST,DRIVE!
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Old 05-13-2011, 03:12 PM
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Re: Couple B21A1/B20A5???

Well thanks for the info. I guess when the motor gets here and I get started I will start a build thread with lots of pics..
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Old 05-13-2011, 03:25 PM
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Re: Couple B21A1/B20A5???

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Originally Posted by Sideswipe SI View Post
What are you implying? I baby my cars man.

I only had Sideswipe from 165k, basically changed everything wrong, and then the motor blew. My prelude died at 180k, clean oil and shards in the pan, I was too late. After the blown motor, I couldn't recoup. I had no money with no time to fixit, or source a motor. Sucked to be me.

So keep the fluids clean, the right level and don't abuse it.
Lol, sorry. I wasn't implying that you did anything wrong. It's how it was treated before you got it. Obviously something we have no control over.

I guess I was just trying to say that it's not so much a design flaw as much as neglect earlier in it's life that causes them to fail. The potential weak spot with our engines is the oiling for the #3 rod bearing, so if the engine was neglected it may manifest itself by throwing the #3 rod out of the side of the block.

I suspect that yours was the exception, not the rule. Otherwise I wouldn't see so many 3rd gens in junkyards with well over 250k miles on them.
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Old 05-13-2011, 10:53 PM
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Re: Couple B21A1/B20A5???

It's cool man, I had to think about it for a minute. I lost my prelude in 06, still a touchy subject. It's one of those "you should not love so hard for something" topics, it was OCD.

Back to you 79f150; were are going to want to see pics. Badly oh so very badly.
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SURGEON GENERAL WARNING:
THE IMITATION OF ANY OR ALL MANEUVERS EXECUTED BY A BA B20A 4WS PRELUDE IS HAZARDOUS TO YOUR CAR'S HEALTH. DRIVING A PRELUDE MAY CAUSE LOSS OF INTEREST IN OTHER CARS, WOMEN AND SPEED LIMITS. OTHER SYMPTOMS INCLUDE SLEEPLESS NIGHTS, COLD SWEATS AND OTHER SYMPTOMS RELATED TO ADDICTION. IF THE SYMPTOMS PERSIST,DRIVE!
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Old 05-14-2011, 08:41 AM
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Re: Couple B21A1/B20A5???

Its cool man I take tons of pics. I love pics to. I mean look at my intro thread.

Oh if you click my sig it sends you to my build thread on my offroad site. I figure the powers to be wouldn't mind sense it isn't any competition.
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