Bang for your bucks – DC5R mods

[TODA AU]

Are these items ok to use on the street as I don't take the car to the track very much but I do a bit of drag racing.

No problem.

[Non Vtec]

If your going to upgrade the Cams etc in the K20A you best bet is to get a Hondata K-Pro and get the IPS-K2's they are proven along with Crower to be the best performing cam on the market making 10-20whp more than the toda N2 engine kit.
As far as stroker kits go, you can do a k24-20 hybrid with a few firms doing sleeved blocks and various other parts, but as yet the hybrids havent really been proven to be reliable as everything is so new.
On the www.k20a.org site there is alot of info to be found about the K20A motors, the modifications people have done and the gains they have made, its well worth a look. You'll find the power you can make from a DC5 will vary with mods, but a Toda Header, any CAI, a K-Pro, and the IPS or Crower cams will see you end up with around 220-250whp, depending on the tuner. Add a set of ITB's and you might see some good gains again, even running a stock block. Upgrade the block and depending on your budget you might see 300whp if its tuned really well..

[SiR CRX]

I just had a look at the Toda header and man it's a nice piece of work. It says it can't be used on the street though, why is this? Can a cat be connected to it? Do Toda do cat-back exhausts for the DC5 too?

[SiR CRX]

I am just wondering if anyone has had any experience with the ARC induction boxes on a DC5R? They look damn cool but do they perform well?

[TODA AU]

I just had a look at the Toda header and man it's a nice piece of work. It says it can't be used on the street though, why is this? Can a cat be connected to it? Do Toda do cat-back exhausts for the DC5 too?

It can be used on the street if a catalyst is added.
I usually fir the cat just after the taper of the last collector & ad a donut flex joint in lue of the braided flex the header comes with.
Use a spiral metal matrix cat for best performance.
Avoid fitting the cat in the B-pipe as it tends to hit the floor on the back-off.

TODA do manufactur a cat back exhaust for the DC5.
It is pictured below.

See: http://www.ozhonda.com/forum/showthread.php?t=20821
For details.

[TODA AU]

If your going to upgrade the Cams etc in the K20A you best bet is to get a Hondata K-Pro and get the IPS-K2's they are proven along with Crower to be the best performing cam on the market making 10-20whp more than the toda N2 engine kit.

Fair comment to a point, but to be honest, your statement is a little missleading.
Btw, great result with your EG. Respect.

FWIW, The IPS-K2 cams are best copared to the TODA Racing Spec C camshafts.
Not the US market only Spec N2 camshafts.
This can easily be seen by looking at camshaft specifications.

IPS K2 intake camshaft specs:

• low speed lobe: 253 (9.25mm)
• high speed lobe: 302 (13.28mm)

TODA Racing Spec C intake camshaft specs:

• low speed lobe: 250 (10.50mm)
• high speed lobe: 300 (13.00mm)

---------------------------------------------------------
IPS K2 exhaust camshaft specs:

• low speed lobe: 246 (8.10mm)
• high speed lobe: 295 (11.84mm)

TODA Racing Spec C exhaust camshaft

• low speed lobe: 250 (10.50mm)
• high speed lobe: 295 (12.00mm)

For those wondering...
N2 cams are not sold in Australia or New Zealand.
Our market uses Spec A2 cams which are slightly larger than the US N2's
N2 295deg at 12.5mm vs A2 297deg at 12.5mm
Larger than these cams do work in various applications.
Please be mindful of your total combination when chosing your camshafts.

[SiR CRX]

That exhaust looks superb. I will be purchasing a cat-back and some headers from my local TODA dealer if I do decide to buy a DC5R. Thanks for all the help TODA AU much appreciated.

[Non Vtec]

Does the Spec C retain the full VTC functions? and come with a Hondata Map? or do they require the VTC killer cam gears?

I didn't realise that Toda Jpn made big K-series cams, Since Toda USA made the N2 kit for them. Rumour was that Toda Jpn was making any cams.. I hope to see some results, if you send me a price I might consider looking into a set aswell, for testing and possible on selling which ever cams don't perform the best..

Gary

[TODA AU]

All TODA Racing camshafts are manufactured in Japan by TODA Racing Co.,Ltd
This includes the US market only Spec N2 camshafts.
Spec C camshafts can be used with VTC or VTC killer sprockets.
(Absolute control of VTC must be maintained. Piston to valve & valve to valve clearance must be acuratly calculated. Use of VTC killer sprocket on exhaust cam is advisable & no more than 40~45deg intake cam advance angle - Hondata K-Pro. Machining of head & cylinder block + used of 0.3mm head gasket also affects these clearance values. )
NB:If VTC function is retained, the factory ecu cannot be used.
If Hondata K-Pro is used, it will require tuning. No Hondata calibration is given.
I'll talk to you via PM re prices etc

[vupham]

Hi Toda_AU or anyone from Brisbane, how much will it cost for the mods below? I like quiet and quicker than stock so i preffer the below path. Anyone in brisbane especialist in modifying dc5 type s?

Low budget – Sleeper (Quiet & quick)
#1 – Lightweight flywheel
#2 – Heavy-duty clutch
#3 – Lower final drive
#4 – Modified stock airbox (Aka Hondata)
#5 – Header + cat + JDM DC5R or Mugen cat back
#6 – Hondata K100
Power output: 120 ~122kw @ wheels (Dyno dynamics- shootout)

[2002 TeGgY]

hey, im new to this site. thanx a lot Toda_AU for all the useful info. i actually live in Wagga Wagga NSW, im sure most of u heard of it lol. anyway, as u probably alredy know there are very limited workshops locally that can do any thing to my base model auto DC5, but i went to P & P perfomance in Wagga to get a cold air intake, and the guy said that it is impossible because of its design and how it doesnt face the front of the engine bay. i was just wondering if getting an expensive mugen air box would make a difference in performance. BTW i alredy have a cat bak Hi-Tech 2.5" exhauste system. thnx

[bubblecivic]

CAI is impossible? I think not!

You will be able to get an Injen CAI for the DC5s for roughly $450 - $550 depending where and the installation is easy to do it yourself from what I've heard.

Places to source them include the clubrsx store at www.clubrsx.com or tozka.com. Toda AU will be able to source them for you also.

There are other brand including K&N Typhoon that you can source from one of our traders, "egSi" so shoot him a PM re this.