Could you please look in your shop manual and tell me the max psi of compression pressure for each cylinder?

As a reference: a GSR has a max of 260psi @ 250rpms with a variance of 28psi.

I expect the ITR to be more

There will be a WOT pressure figure and a 250 rpm figure, i am interested in the 250rpm figure


thx much!

 

I have the service manual for the Type R and I couldn't find any such information. I guess you need a shop manual for something that specific.

 

Thx for looking, I thought a service manual is a shop manual? Or do you mean the owners manual. Maybe another ITR owners can help us?


AL

 

I found it, page 3-2, it says:
Compression:

250 rpm and wide open throttle kPa (kg/cm^2, psi):

Nominal 1,860 (19.0, 270)
Minimum 930 (9.5, 135)
Max. Variation 200 (2.0, 28)

 

You are awesome thx!

thats a USDM R right?

Now I need to find the impossible, JDM R compression #'s


thx again sackdz!

AL

 

Hold on guys, my service manual on page 3-4 states a Nominal compression of 1,471 (15.0, 213). That is for B18C1 and B18C5 engines. I don't know what engine states the Nominal 1,860 (19.0, 270) that sackdz has quoted. This is for USDM Type R. The Minimum and Maximum variation numbers sackdz quoted are the same in my book, just the Nominal numbers are different. I just got this manual 2 weeks ago from Helms. Be careful AL before you use these numbers and let me know what you think of this discrepancy, sackdz. And, I don't know which is the 250 rpm figure and which is the WOT pressure figure, hopefully you can tell the difference from this information.

 

I made a a mistake in saying or, its actually 250 AND WOT. But the diff in # is interesting.

Yellow R: does it give the comp for the R as 10:1 in your book?

sackdz: I bet it has comp as 10.6:1 in your book

Also what year is the publication of each book.

thx guys

AL

 

Ok, my book lists the compression ratio for the Type R at 10.6:1. My book is copyright 11/97. As for his different numbers, I don't see them anywhere in my book. Those Nominal numbers he quoted are different than those listed for B18B1, B18C1, and our B18C5 engines. He might have specs for something else.

 

hello guys,

In my 1997 ITR supplement book it is 1860(19.0,270) on Page 3-2
In my 1996 integra service manual it is 1860(19.0,270) on Page 3-4 (B18C1 engine)
In the same integra service manual it is 1370(14.0,199) on Page 3-2 (B18B1 engine)

Yellow R- I dont know where you are getting your numbers from?

 

Thx for your input #132, now I need to find out how much more psi a JDM R puts out at 11:1 compression.

AL

 

That information was from my 97 Type R Supplement, page 3-2


[Modified by sackdz, 1:41 PM 10/30/2001]

 

Let me know where you guys got this ITR Supplement. The book I have is the Service Manual for all integras from Helms. They list the specs for the VTEC and Non-VTEC B18 motors as well as the B18C5 Type R engine. It's hard to imagine why there is a discrepancy between the two books, as both your supplement and my service manual are clearly intended as references for the Type R engine. Thus, they should both list the same numbers. This is disturbing to me because one is clearly not correct. I may contact Helms and Acura about this. Who knows how much other information is mis-matched between the two manuals for the Type R? People are using this information to work on their cars and it should be accurate. I think I'm pissed. So yeah, please let me know how to get ahold of this Supplement for the ITR. Thanks.

 

I ordered it from Helms' website
Did your #'s come from the type R supp or a b18c5 listing in the full integra helms?

 

My numbers came from the B18C5 listing in the full integra Helms manual. Pages 3-4 as opposed to 3-2 in the supplement. This is bizarre. We may have stumbled across a mistake in one of the manuals.

 

Are you sure you're reading that right? Why would the c1 and the c5 have identical compressions? also, page 3-4? once again which book are you referencing? sorry my books are at home right now...

 

Grr! I didn't pay the $ for the Helms to get mistakes

 

Yeah, I'm at work too, so when I get home I'll see if the numbers are the same for the C1 and C5 engines in my service manual. If that's the case, then I'd be nearly certain that we have a mistake on our hands. Then it's time to call Helms and demand a free upgrade to the corrected manual. Heck, I'll claim I messed up my engine by referencing their numbers and that the least they can do is refund my previous purchase and send the new one free of charge as well, it's the least they can do. $70 or so for incorrect information is a no-no in my book (no pun intended).

 

Sorry about causing the hassle, but this all started because my mechanic looked in his book and he too had the same numbers for the c1 and c5. I thought to myself that was odd. Hence I posted the question here. I am now sure there is a misprint in some of these books, You guys should fight Helms all the way!

AL

 

Yep, it lists the same figures for the B18C1 and B18C5. Whose *** do we kick for any errors?