what are the HP ratings of the JDM motor, and why is it making more then ours?

 

200ps vs 195 HP. They have higher compression pistons and a header and a tad minor other little things.


Modified by Rguy at 5:28 PM 4/17/2003

 

higher comp pistons, different header, different ecu.. better gas.

edit: the actual power isn't enough to base a purchase upon. the power difference to the WHEELS on a used USDM ITR vs. used JDM ITR is determined by how the previous owner treated it, and even then it is minimal.

 

IF given the opportunity to buy a JDM ITR engine, would it be worth it? Also.. whats the differences between the tranny's? how noticable is this difference?
Are the clutches, and flywheels different?

 

the biggest visual difference between usdm and jdm is that jdm ITR motors dont have the "5" designation after the "B18C". only USDM motors are called B18C5.

 

im talking actualy performance. Thanks anyways

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rguy &raquo;</TD></TR><TR><TD CLASS="quote">205ps vs 195 HP. They have higher compression pistons and a header and a tad minor other little things.</TD></TR></TABLE>

200ps, not 205

200ps ~ 197hp

 

My fault! 200ps is correct.

 

if you can get a JDM ITR for the same or lower price than a USDM ITR, then go for it. especially if its a 98+ spec since it comes with the popular JDM 4-1 header and JDM 4.875 FD in its transmission.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B16B &raquo;</TD></TR><TR><TD CLASS="quote">im talking actualy performance. Thanks anyways</TD></TR></TABLE>

theoretically the JDM motor has the same hp rating of 197 ...even though it has higher compresion ....better header ...

though it should be a faster car ....with its better gearing ....

 

good info! but I think I have seen this all here before.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tsunami_zc &raquo;</TD></TR><TR><TD CLASS="quote">
though it should be a faster car ....with its better gearing ....</TD></TR></TABLE>

98+ FD.. not the 95.5-97 (trannies are the same as USDM).
the 98+ also came with 16" wheels, and when raced against each other in best motoring, they were dead even in the 1/4.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jonas &raquo;</TD></TR><TR><TD CLASS="quote">

98+ FD.. not the 95.5-97 (trannies are the same as USDM).
the 98+ also came with 16" wheels, and when raced against each other in best motoring, they were dead even in the 1/4.</TD></TR></TABLE>



I'd rather have a USDM or older JDM tranny and put the ATS FD into it. screw the GS-R/98+SpecR 4th5th gears and the JDM ITR 98+FD.

 

How is it possible that a b18c5 at 10.6:1 and a b18c-r at 11.1:1 have the EXACT same output?

Maybe the better question is: Do they have different hp/tq outputs with the same peak HP?

For some reason, I always thought the b18c-r would make more power. Maybe it just makes more midrange?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chris N &raquo;</TD></TR><TR><TD CLASS="quote">How is it possible that a b18c5 at 10.6:1 and a b18c-r at 11.1:1 have the EXACT same output?

Maybe the better question is: Do they have different hp/tq outputs with the same peak HP?

For some reason, I always thought the b18c-r would make more power. Maybe it just makes more midrange?</TD></TR></TABLE>

They dont.

B18C5 = 195HP
B18C = 197HP

 

Ok, still.
2 hp difference from a .5 jump in compression?

I'd love to see two side-by said dyno's of a stock b18c5 and b18c to compare.

 

how much difference in drivability dies the higher FD make?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chris N &raquo;</TD></TR><TR><TD CLASS="quote">For some reason, I always thought the b18c-r would make more power. Maybe it just makes more midrange?</TD></TR></TABLE>

If you believe the information Honda Japan provides, the 98spec JDM R engine do indeed make more midrange power.

But then again, Skafia is all-knowledgable on everything/anything Honda.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chris N &raquo;</TD></TR><TR><TD CLASS="quote">Ok, still.
2 hp difference from a .5 jump in compression?

I'd love to see two side-by said dyno's of a stock b18c5 and b18c to compare.</TD></TR></TABLE>

to even see a fair comparison, it would have to be a BRAND NEW stock b18c5 vs. BRAND NEW stock jdm b18c... we'll never see that.

 

You guys are comparing HP with PS buth totally forgotten the standard of conditions for measuring the power (related to correction factor).
In Japan they use the JIS standard. In the US it's the SAE standard. And in Europe the ECE standard. The differences are especially: air temp, humidity, atm. pressure, with or without accessories like alternator, P/S, A/C and more....

http://www.superflow.com/suppo...nterp

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DutchITR1689 &raquo;</TD></TR><TR><TD CLASS="quote">You guys are comparing HP with PS buth totally forgotten the standard of conditions for measuring the power (related to correction factor).
</TD></TR></TABLE>

read the rest of this thread. sgT posted the about equivalent of 200 ps, which is 197 hp.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jonas &raquo;</TD></TR><TR><TD CLASS="quote">

read the rest of this thread. sgT posted the about equivalent of 200 ps, which is 197 hp.</TD></TR></TABLE>

PS (Pferde Starke) is just the German term for HP. 1 HP = 1.01387 PS
But this has nothing to do with the testing standards (JIS, ECE and SAE) and correction factors....

You can have 200 HP (JIS), 200 PS (JIS), 200 HP (SAE) and 200 PS (SAE) which are all slightly different.....

The EuroITR makes 190 HP (ECE), and is still stronger than the 195 HP (SAE) of the USDM ITR.



Modified by DutchITR1689 at 2:21 AM 4/18/2003

 

ahh, i get what you're saying. on me

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dawhiteboy &raquo;</TD></TR><TR><TD CLASS="quote">



I'd rather have a USDM or older JDM tranny and put the ATS FD into it. screw the GS-R/98+SpecR 4th5th gears and the JDM ITR 98+FD.</TD></TR></TABLE>

Ok...I may be purchasing a 97 JDM ITR..not to hijack the thread, just have some additional ?'s.

What I get out of the post is...

97 JDM ITR comes w/same FD as USDM ITR, but has different 4 and 5th gears than the 98+JDM ITR. Correct me If Im wrong.

Im assuming the 97 JDM ITR comes w/lower 4th and 5th? Is this correct?

Any info is greatly appreciated.

 

Hell yes Mario.

I think the motors make generally the same power, but in Japan, they run higher octane and they have JDM air.