NC 2.5l engine swaps ?

Regie · Postby **Regie** » Fri Jun 15, 2018 9:36 pm

ozace wrote:I have noticed the goodwin header is very tight fit for a rhd car. Every now and again it runs the steering bits. I am going to try a racing beat system soon.

are you running the drop mounts?

ozace · Postby **ozace** » Fri Jun 15, 2018 9:38 pm

No drop mounts

Postby **Boyracer** » Sat Jun 16, 2018 11:59 am

Works fine without the drop mounts.

ozace · Postby **ozace** » Tue Jun 26, 2018 5:58 pm

going back to get the cams swapped and new header that fits without touching the steering. Zoom Zoom

ozace · Postby **ozace** » Wed Jul 25, 2018 8:53 am

GW header replaced with a Racing Beat one, no touching now. There must be about one cm difference in the bends to allow clearance on the RHD cars.
Cams swapped, the difference is amazingly noticable. The original swap had a massive hit of torque down very low (as most mention) but power fell off a cliff up around 5500rpm. The motor has a gruffness throughout the whole range, you new it was a different motor.
Now the car is 2lt smooth, if you didnt know any work had been done you would think it was just a bloody quick 2lt car. Power is around 30kw up from the original 2lt setup now but the massive dump of torque down low is gone, it is very linear now, smooth delivery thru the whole range and keeps pulling up high in the rev range.

In hindsite, cams should be part of the engine swap from the get go, it keeps the character of the car, just provides more zoom zoom

Custardtart · Postby **Custardtart** » Thu Jul 26, 2018 8:59 pm

Interesting. Which cams did you go for?

ozace · Postby **ozace** » Thu Jul 26, 2018 9:02 pm

A very mild set deckspeed got for me. The engine revs now, but is super smooth. Not a massive jump in power but delivery is very linear, just like the stock 2lt

Custardtart · Postby **Custardtart** » Wed Aug 08, 2018 10:01 am

Hope you’re still loving the 2.5? I just fitted a 4.1 and it does make a big difference.

I just saw a low km 2.0 up for sale for a mere $3k :shock:

Anyone want to offer me $2k for mine, I’m starting my swap soon :mrgreen:

ozace · Postby **ozace** » Wed Aug 08, 2018 10:11 am

Very much still loving it, back to sandown on Saturday for a trackday. The extra revs now are much enjoyed. Waiting to hear about a new more aggressive set of cams someone is trying soon to aim for more power, its addictive.

Regie · Postby **Regie** » Wed Aug 08, 2018 11:38 am

check out the USA forum

Dynatronics is about to release a short stroke kit for the 2.5

8500 redline

and pulls all they way to it

ozace · Postby **ozace** » Wed Aug 08, 2018 12:02 pm

I saw that this morning, looks like its going to be $2500 -$3000 US for the kit. Not really the sort of thing I would be down for.
I am more than happy working locally (within Aus) to get where I want. The power is addictive so its hard to stop. My biggest issue is keeping it all
very drivable every day, and so far I am there.

Postby **Boyracer** » Thu Nov 22, 2018 2:20 pm

Selling NC 2.5, check for sale adds.

bruce · Postby **bruce** » Thu Nov 22, 2018 2:57 pm

Does a 2.5 conversion bump you into a difft class for racing? Or is it allowed? Or do you just don't tell anyone?

Custardtart · Postby **Custardtart** » Fri Dec 07, 2018 10:16 am

I don’t want to spend $100 incl shipping and taxes for the Massive balance shaft delete kit when it just looks like a bolt will do the job.
Does anyone know what size/spec bolt to use?