i searched for the differences but didnt come up with much except for 2 and a bunch of other FS threads.

anyone know the differences, i found thru my search that 98+ spec jdm motors have a 4-2-1 header, and better final drive then the 96-97 spec.

are those the only differences in the jdm itr motors?
any input would be appreciated

 

Comp RT is higher. I believe 11 to 1 or 11.1 to 1. The 4-1 JDM header and the 4.7 FD. That's all I can think of right off the top of my head. If money is not a problem I would go for the 98+ myself.

 

i would say 98spec motor 4-1 header 96rtanny 4.4FD u will love that 4th gear pull, i do

 

the motors are IDENTICAL. only differences are the 98+ has the 4-1 tubular header and a carbon look spark plug cover. Pistons are the same in all JDM B18C-R's.

 

Yes both engines have a compression ratio of 11.0:1.

Gear ratios are different as follows.

96 Spec
4th - 1.107
5th - 0.848
Final Drive - 4.400

(Same as USDM)


98 Spec
4th - 1.034
5th - 0.787
Final Drive - 4.785

The 98 Spec has a 10 rated hp gain over the 96 Spec. (I think from the 4-1 header)
I always thought there was a difference in the intake camshaft, but I'm bet wrong. (Usually am )


Modified by 4DoorJDMITR at 9:26 AM 10/15/2005

 

BHP output for both motors is identical. The 98spec makes 0.5kg more torque and it makes max torque slightly lower, but power is rated at 200ps for both. 98spec also has the same cams as the EK9 CTR and so has 3degrees extra duration on the intake cam. ECU ampping is also slightly tweaked to account for the cam and header difference. Other than that the two are identical internally.

A member on ITR-DC2 sat down and wrote out all the differences as detailed on Type-R legends DVD....

98 Spec JDM V's 96 Spec JDM (Taken from Type R Legends DVD)


I have listed the differences between the 96-98 Spec JDM ITR's below, as taken from BMI's Type R Legends DVD. As you can see it is quite long so you may not want to read it all. Please bare in mind that this is Japanese translated into American, I have changed some of the more obvious facts into UK English and that it is BMI information not mine, so if you don't agree with the facts complain to them....

This list does not include all the Track Battles and extras on the ITR that are on the DVD so I recommend a purchase!!!

1. HID lights on 98 Spec (added weight, but improved night visibility)

2. The most siginficant change are the wheels

96 Spec 195/55/15 4 stud

98 Spec 215/45/16 5 stud (rare tyres....)

3. Brake Discs enlarged

96 spec Front 14" Rear 13"

98 spec Front 15" Rear 14" (I don't know if this is correct as I thought these were mean't to be the same as the UK spec fronts, but the UK spec wheels are only 15")

4. Front Suspension - Modified to increase cornering speeds after extensive testing on the circuit.

96 Spec

Spring rate (KGf/MM) 4.4
Damper (KGf) (Full) 245
(short) 161
Anti Roll Bar (inches) 0.94

98 Spec

Spring rate (KGf/MM) 4.5
Damper (KGf) (Full) 231
(short) 142
Anti Roll Bar (inches) 0.98

5. Rear Suspension

96 Spec

Spring rate (KGf/MM) 4.4
Damper (KGf) (Full) 118
(short) 70
Anti Roll Bar (inches) 0.87

98 Spec

Spring rate (KGf/MM) 4.5
Damper (KGf) (Full) 100
(short) 59
Anti Roll Bar (inches) 0.91

This seems to indicate that Honda decided to increase the stiffnes of the spring slightly but decrease the dampening of the shocks. Also the anti roll bars were thickened. Perhaps someone who knows more about this can explain.....

6. The 98 spec engine was equiped with an all stainless steel manifold giving the engine more torque at lower revs.

96 Spec - 200 ps @ 8000 rpm
18.5kgm @ 7200 rpm

98 Spec - 200 ps @ 8000 rpm
19kgm @ 6200 rpm

7. Other Specs

96 Spec
Height (inches) 52
Rear Track (inches) 57.9
Weight 1060kgs
ABS Option
Airbag Option

98 Spec
Height (inches) 52.4
Rear Track (inches) 58.5
Weight 1100kgs
ABS Standard
Airbag Standard

8. Engine Internals (Enlargement of the thrust bearings, Ports, and Valve Seals) were machined by hand until late 96 spec engines. When it came to improving this process further it took to long by hand, so the engineers were replaced by machines.......

Late 96 spec and 98 spec engine internals were machined by specialist machines that produced work that was so good it was impossible to match by hand.....

9. Quarter mile race between the two models with gearbox ratios as described above....

Gear Ratios

96 Spec

1st - 3.230
2nd - 2.105
3rd - 1.458
4th - 1.107
5th - 0.848

Final 4.4


98 spec

1st - 3.230
2nd - 2.105
3rd - 1.458
4th - 1.034
5th - 0.787

Final 4.785

This all means that 1st, 2nd and 3rd gear are shorter in the 98 Spec (due to the closer ration of the Final drive), but 4th and 5th are wider for top speed...... (i.e. 4th and 5th in the 96 Spec are closer for acceleration, which is why the 96 Spec pull the 98 Spec back in 4th gear in the 1/4 mile)

10. Braking test from about 95 mph

96 Spec (non ABS) - 269.7 ft

98 Spec (ABS and larger discs) - 230.3 ft


11. Circuit Battle (in postion order with lap times)

1. 98 Spec Integra - 1.09.16
2. MR2 G liimted (200ps non turbo) - 1.09.57
3. Celica (T-Sport?) - 1.09.65
4. FTO (Version R?) - 1.10.14
5. Miata - 1.13.45
6. BMW Z3 - 1.13.94

Driver comments - It a stable ride.... There is only a slight improvement in quickness, but the brakes and tires really contribute to the stable lap times.....Its a driver friendly car.... I guess the gear ration has some demerits at top acceleration.... but the 1st 2nd and 3rd gears match the circuit. (1st 2nd and 3rd are shorter on the 98 spec, but 4th and 5th are wider for top speed....) The new ITR (98 spec) is a fine car.....

The ITR is great for low and mid speed courses.... older ITR's had problems with the 1st and 2nd hairpins you couldn't rev the engine enogh for those corners.... but now the second gear is a perfect match


12 Endurance race

The 96 Spec ITR is raced (earlier on) in the Endurance race and it wins on lap consistancy.

The 98 spec ITR is raced in the endurance race (not sure who won this one), the oil temp goes through the roof.... cut to Spoon who say when their cars are on track they use Stock Honda Logo oil filters which fit but are smaller and prevent oil pressure fluctuation (preventing warping of the oil filter case). They also put baffles in the sump and heat tape between the exhaust manifold and the sump to further prevent the oil pressure fluctuating. They also use steel gaskets and steel banding around their oil filters on their racing cars....

Spoon then go on to suggest that if youre driving a 96 Spec ITR with over 60,000 miles (on track I presume) when rebuilding the engine also change the raer suspension arm to a 98 spec (or 2000 spec) version for a milder ride and easier handling. All bushes are compatible between 96 spec, 98 spec and 2000 spec so go for the latest you can get.... before making major mods Spoon recomend changing these small parts to enjoy the circuit more first....

13. 2000 spec ITR differences (I don't think there is a 2000 spec ITR as such but its just that Honda was alway making fine adjustments upto the end of the production run.... similar to say the S2000 production run....)

The drive shafts, hubs and bearing have all been syncronised (machined!?!) for better movement, which is the kind of precision work Honda have been doing for the past year or so...

 

great input! where can i get that DVD, the type r legends...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by akteamster &raquo;</TD></TR><TR><TD CLASS="quote">great input! where can i get that DVD, the type r legends...</TD></TR></TABLE>

I got mines at Best Buy