Honda Car Forum

Hi..
Just replaced my sons 91 civic si with a JDM from Toronto.
Same everything with a couple of exceptions...notably the
exhaust manifold is a dual port (at the collector end).
I know the CRX and Si/ DX motors all about the same, But I wasn't
aware of the dual manifold. My daughters CRX had a single exit.
Anyone know if that is common here in North America, or maybe just
a Pacific rim item. Would make for a niffty exhaust system if useable.
Will put it up for sale, as I had to use the original manifold from the
dead engine.
Thanx for any info
Ray

RayGun wrote:
> Hi..
> Just replaced my sons 91 civic si with a JDM from Toronto.
> Same everything with a couple of exceptions...notably the
> exhaust manifold is a dual port (at the collector end).
> I know the CRX and Si/ DX motors all about the same, But I wasn't
> aware of the dual manifold. My daughters CRX had a single exit.
> Anyone know if that is common here in North America, or maybe just
> a Pacific rim item. Would make for a niffty exhaust system if useable.
> Will put it up for sale, as I had to use the original manifold from the
> dead engine.
> Thanx for any info
> Ray
>
yes, i believe that manifold's specific to the foreign markets. shame,
i'd like to have one!

and it sounds like you may have a good motor there! how does it drive?

jim beam <nospam@example.net> wrote:

> and it sounds like you may have a good motor there! how does it drive?

I had heard that JDM motors were generally junk. Because the original
owner knows that the engine is going to be replaced at low mileage, there
is no care or caution exhibited in its operation.

Dunno... Can't be worse that a pick-and-pull motor, I would guess.

--
---
Clarence A Dold - Hidden Valley (Lake County) CA USA 38.8,-122.5

Well never having heard of 'JDM' until I started the quest for an
engine, some items have come to light. My neighbor who assisted with
his truck to get the engine home, and works nearby the place, was told
by one of his fellow workers, that (no proof here,,, but) because of
restrictive emission standards, these motors get pulled around the 50k
to 65k kilometres, and replaced.!!! Mind boggling from north american
standards. Not just try to improve emmisions, but yank the engine, and
replace....!! Soooooo, believing that,,,and if true, that is still a
pretty fresh engine to start with.
Well the swap went exceedingly well (got a gash in my forehead from the
exhaust pipe...but had to spill blood anyway to appease the luck gods)
Minor differences, lacking a couple of north american emission things,
and all writing lables and decals totally unreadable...
(Wish I could have used the manifold..it really looks cool, if a
manifold can look cool)
The entire engine is amazingly clean, unlike a crudded up one over here
with 300k on it. Plugs were hardly worn, so we kept them, the only
fowled item were the injectors, which were in worse carboned up state
than the ones in the old engine. We swapped them out.
Replaced the crank / tranny oil seal just because it was easy.
It took a little to start the bugger, but once running, and put the
timing light on it (had to use our old distributor) it was like the
proverbial sewing machine...only a lot better than we just had.
Junior has taken it to work and back, about 600 k, and he is tickled
pink that he isn't throwing in a litre of oil daily now. Mileage of
course is better than the old engine, and so far it hasn't skipped a beat.
I believe that there is a little starving of fuel in the higher rpms, as
he reports a little lag in power above the 4000 mark, but we are sure
that a new gas filter, distributor cap and rotor, (original has over
300k on it), and a better touch with the timing light should bring
things into place.
If we lucked out and got the pick of the litter, I couldn't be happier.
$400,00 cdn, nice warm garage, couple of days longer than anticipated,
Wished I had known about this two years ago when I got the thing rebuilt.

ps...if you want, I'd be happy to send photos of the manifold...I hope
that someone would want it, don't want to chuck it out...
Cheers
Ray



jim beam wrote:
> RayGun wrote:
>
>> Hi..
>> Just replaced my sons 91 civic si with a JDM from Toronto.
>> Same everything with a couple of exceptions...notably the
>> exhaust manifold is a dual port (at the collector end).
>> I know the CRX and Si/ DX motors all about the same, But I wasn't
>> aware of the dual manifold. My daughters CRX had a single exit.
>> Anyone know if that is common here in North America, or maybe just
>> a Pacific rim item. Would make for a niffty exhaust system if useable.
>> Will put it up for sale, as I had to use the original manifold from the
>> dead engine.
>> Thanx for any info
>> Ray
>>
> yes, i believe that manifold's specific to the foreign markets. shame,
> i'd like to have one!
>
> and it sounds like you may have a good motor there! how does it drive?

RayGun wrote:
> Well never having heard of 'JDM' until I started the quest for an
> engine, some items have come to light. My neighbor who assisted with
> his truck to get the engine home, and works nearby the place, was told
> by one of his fellow workers, that (no proof here,,, but) because of
> restrictive emission standards, these motors get pulled around the 50k
> to 65k kilometres, and replaced.!!! Mind boggling from north american
> standards. Not just try to improve emmisions, but yank the engine, and
> replace....!! Soooooo, believing that,,,and if true, that is still a
> pretty fresh engine to start with.

i've heard that. also, japan is a small densely populated island with
excellent public transportation, so a lot of cars don't get driven much
before they get junked. and they have tax laws that make it prohibitive
keeping older cars on the road.

> Well the swap went exceedingly well (got a gash in my forehead from the
> exhaust pipe...but had to spill blood anyway to appease the luck gods)
> Minor differences, lacking a couple of north american emission things,
> and all writing lables and decals totally unreadable...
> (Wish I could have used the manifold..it really looks cool, if a
> manifold can look cool)
> The entire engine is amazingly clean, unlike a crudded up one over here
> with 300k on it. Plugs were hardly worn, so we kept them, the only
> fowled item were the injectors, which were in worse carboned up state
> than the ones in the old engine. We swapped them out.
> Replaced the crank / tranny oil seal just because it was easy.

good move.

> It took a little to start the bugger, but once running, and put the
> timing light on it (had to use our old distributor) it was like the
> proverbial sewing machine...only a lot better than we just had.
> Junior has taken it to work and back, about 600 k, and he is tickled
> pink that he isn't throwing in a litre of oil daily now. Mileage of
> course is better than the old engine, and so far it hasn't skipped a beat.
> I believe that there is a little starving of fuel in the higher rpms, as
> he reports a little lag in power above the 4000 mark, but we are sure
> that a new gas filter, distributor cap and rotor, (original has over
> 300k on it), and a better touch with the timing light should bring
> things into place.

yup, should do. don't forget leads too. also, consider having the
"new" injectors cleaned. because of their low mileage, they may
ultimately prove to be a better choice.

> If we lucked out and got the pick of the litter, I couldn't be happier.
> $400,00 cdn, nice warm garage, couple of days longer than anticipated,
> Wished I had known about this two years ago when I got the thing rebuilt.
>
> ps...if you want, I'd be happy to send photos of the manifold...I hope
> that someone would want it, don't want to chuck it out...

i'm interested. send a pic via tegger [don't care to get my personal
email spammed].

> Cheers
> Ray

glad you're happy ray. i'd run injector cleaner through it for the
first few tanks to help clean some excess carbon from the valves and
combustion chamber. engines that don't get "hot" tend to build up quite
a lot of it.

and keep that thing in good shape by using a quality motor oil!!!
tegger's got some pics on his site of various results...

>
>
>
> jim beam wrote:
>
>> RayGun wrote:
>>
>>> Hi..
>>> Just replaced my sons 91 civic si with a JDM from Toronto.
>>> Same everything with a couple of exceptions...notably the
>>> exhaust manifold is a dual port (at the collector end).
>>> I know the CRX and Si/ DX motors all about the same, But I wasn't
>>> aware of the dual manifold. My daughters CRX had a single exit.
>>> Anyone know if that is common here in North America, or maybe just
>>> a Pacific rim item. Would make for a niffty exhaust system if useable.
>>> Will put it up for sale, as I had to use the original manifold from the
>>> dead engine.
>>> Thanx for any info
>>> Ray
>>>
>> yes, i believe that manifold's specific to the foreign markets.
>> shame, i'd like to have one!
>>
>> and it sounds like you may have a good motor there! how does it drive?
>
>

jim beam <nospam@example.net> wrote in
news:hpqdnYdLiea2jHveRVn-qg@speakeasy.net:

> RayGun wrote:

>>
>> ps...if you want, I'd be happy to send photos of the manifold...I
>> hope that someone would want it, don't want to chuck it out...
>
> i'm interested. send a pic via tegger [don't care to get my personal
> email spammed].



Send 'er to me. I'll post it in the Misc directory.

Might also be a good idea to include a pic of the original manifold as
well, for comparison purposes.



--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/