Just wondering if the TJ's 155kw motor is a noticeable increase then the TH 147kw motor? Or are they practically the same?

WELL... It is more powerful. What do you think?

8 Whole Kw. So yeah, you can feel the difference, although slight. My 02Tj Series II is 155Kw. I drove the TH's and all that, they seem to be the same'ish' until past like 3500Rpm. The fuel maps have been tweaked, and the 155kw 3.5 feels gutsier after that rpm. The tourque feels better on the 155 as well.

Dispite the power increase, its not worth paying over 2 grand extra for, as thats all it takes to make the 147 to produce over 160kw.

peace

I had a TH Sports(147kws) before my current TJ Sports(163Kws... now possibly 190Kws... :D )... I could feel the difference...

Even from 147Kw------>155Kws at the fly, you will still feel the grunt, mostly because of the revised torque curve...The TJ series have 85% of their torque from 2500RPM up.....

I test drove a few TH's before driving a few auto TJ's and eventually getting my own manual TJ. The power increase isn't the main noticeable feature distinguishing the TH 3.5 to the TJ 3.5. Its the torque. the 155Kw motors seem to be a lot gutsier than the 147kw ones. Theres only a 1Nm difference in torque between the vrx/sports and the 155kw powerplant

yeah, but (I HATE TALKING BOUT THIS) the "PEAK" torque barely goes up, BUT the engine revs freely and has MORE of its torque higher in the rev range, thats what makes the extra 8kw over the exec Series 2...

put simply, the torque curve after 4000rpm gets higher. TORQUE X RPM = KW, thats where the increase come from.

i cant comment - i have the 147kw version - and i have never had the chance to try a 155kw manual - the difference in auto to manual is so big that there is no comparison!! I still pull on hard thgouh!!

Manual

as u said... Auto > Manual = large diff

I was under the impression that the only differenc between the 147 and 155 figures is the rear muffler and a slightly tweaked computer taking advantage of the muffler

Does anyone know the performance times difference? Also do you know what the performance difference is between the auto and manual.

Does anyone know the performance times difference? Also do you know what the performance difference is between the auto and manual.


I remember the performance times between the auto and manual on the 0-100km/h was 1 second.... max 1.1 seconds

It should work out to about .5 of a second to over 1 second over the quarter mile...

I was under the impression that the only differenc between the 147 and 155 figures is the rear muffler and a slightly tweaked computer taking advantage of the muffler

Nope. It was a cams and ECU adjustment. The muffler then made the difference between the 155 and 163. Their marketing claimed there was further ECU tweaks but that's crap.

[quote=mr_mbquart]I...
Nope. It was a cams and ECU adjustment. The muffler then made the difference between the 155 and 163. Their marketing claimed there was further ECU tweaks but that's crap.

I reckon they have tweaked the ECU for 163kw. My TJII 5SA picks up from idle almost too quick.. It must dump fuel in the 900 to 1800rpm range, or manically adv the timing in that rev range, cos it launches v nicely, on light to med throttle. Much more than my TH Advance with 4sp normal auto.

Plus, I use around 1 to 1.5 litres more per 100k around town than the TH. i reckon they have tweaked the ECU to push more fuel in. :)

It had a cam revision. If it's a slightly higher lift, it will mean more fuel is being used and would increase power and torque. There's a guy here who works for MMAL and he says the 155 - 163 difference is the muffler and someone else posted a responce from MMAL stating the same. I'm not having a shot at you but that's what we've heard from the horses mouth.

I've got a TH sports Tiptronic with, 2.5" cat back exhaust, K&N Pod, dodgy CAI setup, and I blow away standard TH' execs and sports, everyone I've spoken to in the past has said exhaust makes the major difference - which it did to my TH! then slight ECU tweaks. I haven't came up against a manual TH or better but I can always hope, so I can compare!

The exhaust would make the difference. Mind you. The stock exhaust is almost 2.5'. Did you get mandrel bent piping? The ECU tweeks were between the two versions of the 3.5 when they had the cam revision which was nominaly between the TH & TJ. There are some TJ's with the earlier engine, though.

It had a cam revision. If it's a slightly higher lift, it will mean more fuel is being used and would increase power and torque. There's a guy here who works for MMAL and he says the 155 - 163 difference is the muffler and someone else posted a responce from MMAL stating the same. I'm not having a shot at you but that's what we've heard from the horses mouth.

So, the 147kw I had in my TH has a less aggressive cam, and smaller exhaust than my 163kw TJII? - No ECU mods? :)

So, the 147kw I had in my TH has a less aggressive cam, and smaller exhaust than my 163kw TJII? - No ECU mods? :)

Yeah, sort of.

They released the 147. Then it received the cam and ECU revisions.

The VR-X / Sports then get the muffler change.

There's some funnines the models and outputs too.

[quote:ece0d32c9c="Redav"]It had a cam revision. If it's a slightly higher lift, it will mean more fuel is being used and would increase power and torque. There's a guy here who works for MMAL and he says the 155 - 163 difference is the muffler and someone else posted a responce from MMAL stating the same. I'm not having a shot at you but that's what we've heard from the horses mouth.

So, the 147kw I had in my TH has a less aggressive cam, and smaller exhaust than my 163kw TJII? - No ECU mods? :)[/quote:ece0d32c9c]

The difference between the 147kW engine and the 155kW is a revised cam and the mandatory ECU tweaks to re-tune.

The difference between the 155kW and the 163kW is the rear muffler.

I think that's right..

Redav, yeah I asked the exhaust shop to replace my exhaust when I was rear ended ... I said yeah whack on a 2.5" bent mandrel system, or whatever is gonna give me more gain (insurance was covering the cost of stock so I paid difference) I have no idea what exactly they replaced it with but I am more than happy, huge gains!!, the single tip is slightly bigger in diametre than the straight ended one on the latest VRX's etc but mine is bent down and way way way way more loud, but I do have a drone at certain revs but thats ok :)

Here's a review of the TH sports auto, autospeed said they think the muffler can be up to a 15kw increase if changed
http://www.nobullcomputing.com/thsports.pdf

Redav, yeah I asked the exhaust shop to replace my exhaust when I was rear ended ... I said yeah whack on a 2.5" bent mandrel system, or whatever is gonna give me more gain (insurance was covering the cost of stock so I paid difference)...

Good score. Insurance just paid for my new monitor. They were to replace the 15' so I paid the difference when I picked up a 17'.

I was under the impression that the only differenc between the 147 and 155 figures is the rear muffler and a slightly tweaked computer taking advantage of the muffler

Nah that's the difference between the 155 and 163 VRX and sports TJ's