Has anyone changed there 4.4FD in there ITR to a 4.7FD???

If so how did it feel. On the tollway? Top speed?

I have to open up the trans and it was just a thought thats been going thrw my head.

The only reason why i ask this is.

My buddie has a k20a2 USDM type S in his EG the car RIPS. But than last winter he changed his 4.3 (stock FD) to a 5.0FD but the car just seems slower on the tollway. and all around...... Any input???

This is why i am asking this question?

 

 

bump

 

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

http://www.fatboyraceworks.com...are=1

 

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

http://www.fatboyraceworks.com...are=1 </TD></TR></TABLE>

SICK

 

Going with a 4.7FD would increase acceleration at the expense of top end speed. In other words, if you don't change fifth gear, the car will be HORRIBLE on the freeway. The stock ITR transmission with the 4.7FD actually uses the .787:1 GSR fifth gear rather than the .848:1 fifth gear used in the earlier, 4.4FD ITR transmission. This brings freeway revs down to something similar to the earlier 4.4FD transmission with its stock .848:1 fifth gear. So using a GSR fifth along with the 4.7FD would not be a bad idea. You could possibly also use the .742:1 fifth gear from an LS transmission. This would give you similar overall gearing in fifth gear to a GSR transmission for lower revs yet.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by StorminMatt &raquo;</TD></TR><TR><TD CLASS="quote">Going with a 4.7FD would increase acceleration at the expense of top end speed. In other words, if you don't change fifth gear, the car will be HORRIBLE on the freeway. The stock ITR transmission with the 4.7FD actually uses the .787:1 GSR fifth gear rather than the .848:1 fifth gear used in the earlier, 4.4FD ITR transmission. This brings freeway revs down to something similar to the earlier 4.4FD transmission with its stock .848:1 fifth gear. So using a GSR fifth along with the 4.7FD would not be a bad idea. You could possibly also use the .742:1 fifth gear from an LS transmission. This would give you similar overall gearing in fifth gear to a GSR transmission for lower revs yet.</TD></TR></TABLE>

Ya i knew all that but thanks for the info man

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by StorminMatt &raquo;</TD></TR><TR><TD CLASS="quote">Going with a 4.7FD would increase acceleration at the expense of top end speed. In other words, if you don't change fifth gear, the car will be HORRIBLE on the freeway. The stock ITR transmission with the 4.7FD actually uses the .787:1 GSR fifth gear rather than the .848:1 fifth gear used in the earlier, 4.4FD ITR transmission. This brings freeway revs down to something similar to the earlier 4.4FD transmission with its stock .848:1 fifth gear. So using a GSR fifth along with the 4.7FD would not be a bad idea. You could possibly also use the .742:1 fifth gear from an LS transmission. This would give you similar overall gearing in fifth gear to a GSR transmission for lower revs yet.</TD></TR></TABLE>

Horrible? Thats not true at all. I put the 4.75 in my tranny and aboslutely loved it all around. Far from horrible in any gear.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hybrid96EK &raquo;</TD></TR><TR><TD CLASS="quote">

Horrible? Thats not true at all. I put the 4.75 in my tranny and aboslutely loved it all around. Far from horrible in any gear.</TD></TR></TABLE>

So you put the 4.7 in your 96-97 ITR trans and liked it? Ya i wana do it im just worried about the all around driving. I no it will kick *** out the hole i just want it to still feel awsome from rolls 3rd gear and up, ya know.

Please fill me in

 

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

So you put the 4.7 in your 96-97 ITR trans and liked it? Ya i wana do it im just worried about the all around driving. I no it will kick *** out the hole i just want it to still feel awsome from rolls 3rd gear and up, ya know.

Please fill me in </TD></TR></TABLE>

Its going to accelerate quicker in EVERY gear. Yes, its going to spin more RPM on the highway, but its nothing to be pissed about. All around I would happily do it again. As soon as I find out if it will fit in my 99 Si tranny (should), then I will be saving up for it again. Its by far one of the best things you can do for these engines NA.

 

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hybrid96EK &raquo;</TD></TR><TR><TD CLASS="quote">Its going to accelerate quicker in EVERY gear. Yes, its going to spin more RPM on the highway, but its nothing to be pissed about. All around I would happily do it again. As soon as I find out if it will fit in my 99 Si tranny (should), then I will be saving up for it again. Its by far one of the best things you can do for these engines NA.</TD></TR></TABLE>

With a 4.4FD, freeway revs are already at around 4800RPM at 80MPH. The 4.7FD is going to bump it up to over 5000RPM at 80MPH.

 

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

With a 4.4FD, freeway revs are already at around 4800RPM at 80MPH. The 4.7FD is going to bump it up to over 5000RPM at 80MPH.</TD></TR></TABLE>

Whats the point here? I dunno about your engine, but even at 5,000rpms, I am still 4,000rpms away from redline. I've got plenty of room left. I'm not worried about a little rpm on the highway. If you want low rpm grunt, your in the wrong game. A torqueless engine is nothing without gearing.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hybrid96EK &raquo;</TD></TR><TR><TD CLASS="quote">Whats the point here? I dunno about your engine, but even at 5,000rpms, I am still 4,000rpms away from redline. I've got plenty of room left. I'm not worried about a little rpm on the highway. If you want low rpm grunt, your in the wrong game. A torqueless engine is nothing without gearing.</TD></TR></TABLE>

I guess my biggest concern here is longevity. Although VTEC motors seem to do MUCH better at sustained high RPMs than other motors, lower is still better. As for low RPM grunt, a 'torqueless' motor like a B18C5 (which has 130ft-lb torque - better than average for a 1.8l) is actually not so torqueless if you put it in something light like a CRX. It's only 'torqueless' because, the way I see it, a 1.8 liter engine has no business being in a 2700 pound car.

 

longevity and mileage....lets not forget gas prices

 

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

I guess my biggest concern here is longevity. Although VTEC motors seem to do MUCH better at sustained high RPMs than other motors, lower is still better. As for low RPM grunt, a 'torqueless' motor like a B18C5 (which has 130ft-lb torque - better than average for a 1.8l) is actually not so torqueless if you put it in something light like a CRX. It's only 'torqueless' because, the way I see it, a 1.8 liter engine has no business being in a 2700 pound car.</TD></TR></TABLE>

higher rpms does not always = increased wear. Get that idea out of your head.

130ftlbs of torque is weak. I don't care how you size it up. The only reasons these engines can do as well as they do is through the "miracle" of gearing. Plain and simple gears multiply torque. Not all of us like driving around 1,800lb CRX's. I personally HATE the CRX myself. I'm an EK guy myself. Not the lightest in the world, but what I prefer. Each to his own.

As for the mileage arguement, I got 28mpg city with my 4.75 final in my EG setup. Its not nearly as "horrible" as a lot of people in this thread seem to think. BTW, has anyone who has posted a negative comment regarding this final drive actually had one before?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hybrid96EK &raquo;</TD></TR><TR><TD CLASS="quote">

As for the mileage arguement, I got 28mpg city with my 4.75 final in my EG setup. </TD></TR></TABLE>

That's in the city. You can cruze around at 40 in 5th gear if you wanted to. Try emptying a tank at 80mph and let me know what you get. Just for the record I have a mfactory 4.9 in my car

 

Well FYI this would be going into a 1800 pound Ef not a 2700 pound car

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MyLilCivic &raquo;</TD></TR><TR><TD CLASS="quote">Well FYI this would be going into a 1800 pound Ef not a 2700 pound car</TD></TR></TABLE>

Then I wouldn't even bother with a 4.7FD. It just doesn't take that much to get something THAT light moving. Besides, with the super short overall ratio in first gear with a 4.7FD, you will just end up burning up the tires when you try to start. Seriously, even 4.4 seems a little on the short side on something as light as a CRX - especially in fifth gear. Keep your transmission the way it is and spend your money elsewhere. You'll be glad you did in the end.

 

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

That's in the city. You can cruze around at 40 in 5th gear if you wanted to. Try emptying a tank at 80mph and let me know what you get. Just for the record I have a mfactory 4.9 in my car</TD></TR></TABLE>

I don't know what to tell you. The car never seemed to get less then 26-27 and that was even taking it out to the track. Always seemed to get pretty good mileage in all honesty.

 

Simple solution: Keep your stock final drive and just swap out your 3rd/4th for some closer ratios. This will:

1) Have no effect on "burning up the tires when you try to start"
2) Have no effect on your "gas mileage" as you are keeping your stock 5th for cruising
3) You will benefit from an insane increase in acceleration through 3rd/4th

Just my two cents

 

Thanks for the input

 

heh, with all this talk about gas mileage n things, if anyone here is interested in not quite running a 4.7fd but are looking for something in betweeen a 4.4 and 4.7 fd ratio, I have an OS Giken 4.60 fd for sale

altho, you need the 4.7fd parts in order to use it

btw, I ran a 4.7fd in a S80 case w/B16 1-4th gears & GSR 5th back when they first came out and I totally totally totally loved it. The acceleration aided by a lightened flywheel was pure ****. Of course, this was back in 98 when gas prices were in better $hape. You won't be dissapointed. But you will come to notice how the ITR 2nd gear seems almost useless w/the 4.7 (at least on a 15" sized wheels).


Modified by Katman at 11:13 AM 3/25/2008

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Katman &raquo;</TD></TR><TR><TD CLASS="quote">Of course, this was back in 98 .....
Modified by Katman at 11:13 AM 3/25/2008</TD></TR></TABLE>

god you are old

 

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

god you are old </TD></TR></TABLE>

....and experienced