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Zeboy
12-04-2002, 09:29 AM
I have recently found a 1986 HONDA PRELUDE SI 2.0 LITER WITH A 5 SPEED TRANSMISSION. The only thing thats wrong with it is that it hit a curb and than smashed onto another curb and broke the front axel. The engine runs fine and thats what I am really interested in. Anyone that would know whether or not the engine in this would fit in my 1989 accord would be greatly appreciated. Thanks.
Here is a link to the Prelude pics (http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1873626254)

Zeboy
12-04-2002, 09:36 AM
It has a carb A20A1 motor. ---To help you answer my question---

Nospeed
12-04-2002, 05:39 PM
From what i understand, yeah, it will fit. my 88 dx has an a1 in it too, so you could probably just plop that engine into it with no probs...correct me if im wrong. :)

carotman
12-04-2002, 06:27 PM
It's not a carb if it's an SI model.

but yes it will fit your car if you take the hardware from your current DX engine (carb and wires and some other small stuff)

Zeboy
12-04-2002, 06:33 PM
what do you mean "if you take the hardware from your current DX engine (carb and wires and some other small stuff)"??

flamed89
12-04-2002, 07:17 PM
Originally posted by carotman
It's not a carb if it's an SI model.

but yes it will fit your car if you take the hardware from your current DX engine (carb and wires and some other small stuff)

yea he's right,i have an 86 si. it has the same motor as the 86-87 lxi. if you buy the car let me know i might be interested in some body parts!

Zeboy
12-04-2002, 07:35 PM
I hear that the engine will fit, but don't prelude engine sit towards the firewall and accords sit towards front. How would it work if they are opposite?

flamed89
12-04-2002, 07:43 PM
dude i realy think that the engine bays are pretty much identical. the motor and trans are exactly the same as an accord. oh and carot means you will have to put the carb intake and other part on the si block for it to work in you car,unless you do an efi conversion!

Zeboy
12-04-2002, 07:58 PM
Nice... Cause My friends are saying that I wont be able to do it.

3rd GEN
12-04-2002, 10:33 PM
why would you want to put that engine in your accord??
the a20 in your 89 is better then the a20 in the 86 lude...
it's not wort it...the accord engine has more HP and TQ then the 86 lude...you would be losing if you did that swap..
plus, i can eat those ludes alive in my accord...

carotman
12-05-2002, 11:52 AM
the a20 in your 89 is better then the a20 in the 86 lude...
it's not wort it...the accord engine has more HP and TQ then the 86 lude...you would be losing if you did that swap..
plus, i can eat those ludes alive in my accord...


That's NOT true

Doublecheck your info before posting attrocities like this one. The Lude engine is better than the Accord engine. Wilder cam, different cam sprocket, different distributor. better transmission.. Lots of small stuff that make the lude better.

PhydeauX
12-05-2002, 01:26 PM
Didn't know the cam sprocket was diferent. Is the cam timing slightly diferent on it. My have to try that untill justin gets around to getting those gears finished, or I just have my own made.

andy

3rd GEN
12-06-2002, 02:01 AM
ok.. well my point is..
why would he put an 86 motor... is his 89????
that makes no sence...
also.. it is carbed...so it's not that great!!

just like the 3geez.. auto and carb are the slowest you can have.. those ludes are the same... auto and carb = slow!!!
I have easily beaten sooooooo many of those ludes...

YK86
12-06-2002, 02:13 AM
That's because the 86/87 Prelude 2.0SI has the 110HP BT/A20A3 EFI motor. His 89 has the 98HP a20a1 carbed motor. If he had the 89 A20A3, that's a different story.
Also, I did alot of part number checking and from what I can find, the Prelude motor uses the same camshaft as the Accord (part number 14111-PJ0-010 for the 5 speed). I checked this because I wanted to know if the Lude cam would be a good core for regrinding. The cam gear was also identical when I compared it to the Accord ones I grabbed.
As for the Lude engine that doesn't fit, you are thinking of the 88+ B20A5 motors that til the wrong way and stuff.

3rd GEN
12-06-2002, 11:06 AM
Don't the carbed 88-89's have 110hp??
and the carbed 86-87's had 98 hp??
and the EFI 88-89's had 122 hp
and the EFI 86-87's had 110hp???

thats what I always thought....:rolleyes:

Zeboy
12-06-2002, 11:12 AM
ok. I have a carbed 5 speed and the lude is a carbed 5 speed. My engine is shot. There is something worng with it and I haven't had time to get it fixed. When I got it the guy said the piston rings went, then it was the head gasket, than it was the timing belt. So stead of paying so much to get the pistons fixed. I figure I'll get the whole car for cheap and take the pieces I need.
So, it's either a working engine or non-working engine.

Zeboy
12-06-2002, 11:17 AM
I appreciate all the replys everyone has posted. It has helped a great deal.

YK86
12-06-2002, 11:52 AM
If the Lude is carbed, it's not an 2.0Si.

Zeboy
12-06-2002, 01:13 PM
Oh. Then my bad. I wrote the wrong thing then.

socal3rdgen
12-06-2002, 02:23 PM
Originally posted by YK86
That's because the 86/87 Prelude 2.0SI has the 110HP BT/A20A3 EFI motor. His 89 has the 98HP a20a1 carbed motor. If he had the 89 A20A3, that's a different story.
Also, I did alot of part number checking and from what I can find, the Prelude motor uses the same camshaft as the Accord (part number 14111-PJ0-010 for the 5 speed). I checked this because I wanted to know if the Lude cam would be a good core for regrinding. The cam gear was also identical when I compared it to the Accord ones I grabbed.
As for the Lude engine that doesn't fit, you are thinking of the 88+ B20A5 motors that til the wrong way and stuff.

so yasu does this mean that i can pull prelude shafts as well as accord shafts. since you say that they are the same.

dXsquared
12-06-2002, 02:31 PM
this is what u have if it is carbed... a A18... with a tranny that is different than the accord... the whole engine may fit, but maybe not... i know the 2.0 SI will go in... it is identical to the 86-87 LXi. i have a lude EFI A20. i am converting it to carb...

Travis

PhydeauX
12-06-2002, 03:07 PM
The a18 will swap in. I think it came in some of the overseas accords. The either tranny will work on the motor. It depends which car you are swaping into which tranny you need. If the car had a 1.8 then you need the 1.8 tranny. If it had a 2.0 then you need a 2.0 tranny. It only has to do with the axles.

andy

YK86
12-06-2002, 03:47 PM
Originally posted by socal3rdgen
so yasu does this mean that i can pull prelude shafts as well as accord shafts. since you say that they are the same.
I'm pretty sure after looking at them side by side and also looking up part numbers.

buzzbomber88lx
01-03-2003, 02:28 PM
Why does my pops' 90 prelude have a 2.1 in it? Is it because it is the si 4ws or did that motor com in any of the other models?

carotman
01-03-2003, 06:26 PM
That's because the engine is a B21A which came in the Si model in 90-91

MrOldLude
01-08-2003, 08:50 PM
You know your stuff carotman.

As far as 3rd generation ludes go, the engine options for 88-89's were the B20A3 which was a carb'd 2.0. These are the S-models. The more prevalent and desireable engine for the US domestic market was the B20A5 engine on the Si's. More hp and torque plus fuel injection. 4ws was an option. Progressing to 90-91, the carb'd engine was discontinued. The 2.0 Si was held over, but in addition, Honda offered a 2.1 (B21A1). Torque was increased only slightly as was hp (but only maginally... 8ftlbs and 5 hp respectively)

In the grand scheme, the 2.1 was a good idea. Unfortunately, it was the guinea pig for fiber-reinforced cylinder walls. In time, we've found on my primary board (preludepower.com) that the b21a1's are subject to the cylinder walls wearing away and oil-consumption. Options include rebuilding the engine and resleeving it with iron-liners, or simply buying a JDM (prelude spec) B20A.http://www.preludepower.com/Specs.html

Since I don't know too much about accords yet, I might say the direct swap is possible, but with the way the engine is canted (there is a 33 degree difference) there could be problems.

http://www.imagestation.com/picture/sraid34/p8ae4e062424e53e1c9f72e7545128373/fd341edb.jpg
Look anything like yours?

carotman
01-08-2003, 08:57 PM
There are indeed problems.

The Accord uses a cable clutch and a shifter rod (just like the Civic/Integra)

The engine mounts do not line up and custom fabrication would be necessary. So far, no one makes engine mounts for the later serie of B20A engines. Making this swap a not so good option.

www.placeracing.com makes a mount kit for the Integra engines inf you want to put one in the Accord.

MrOldLude
01-08-2003, 09:07 PM
Yeah, that would certainly cause problems. My linkage is a cable, but the clutch is hydraulic as opposed to a mechanical release system.

meanaccord
01-18-2003, 05:41 PM
so my boy has a lude with an b21a1 or something and it tilts towards the firewall. I was told it wouldnt fit in my 89 accord lx due to the fact of the different tilt. Prove me wrong

Sean
01-18-2003, 10:29 PM
sure the accord b20a lean towards the radiator. your speaking of the b20a5 yep yep leans towards the firewall.

custom88
01-21-2003, 12:46 PM
I have a motor out of an 87' lude in my car and all that I had to do is swap out all of my mounts and wiring harness and the intake and exhuast manifolds to get the motor to fit right this is suggested anyways due to the fact that you know that your stuff works properly and it really wasnt that hard.