2 Nissan T25G for 400rwhp 1j build [budget twins upgrade]
Sun, 27 March 2005 13:38
These turbos are older style sleeve bearing turbos that come stock on Nissan SR20 2 litre motor in a few different cars.
Feel free to jump in and add info about the turbos or your opinion on what would do the job better etc as I searched but could not get much.
I found that they are good for around 230rwhp when pushed on an SR20 so figure two will do the 480 at the crank that I am looking for.I guess this will equate to approx 400 rwhp with 2 on the 1j.
To look at,the t25g turbo inlet and outlets do look 20% bigger than the stock ct12a's which I cold not find the specs of,guess no-one cares.My simplistic maths says that if the turbo is supplying your power needs at or close to its "top end" then bottom end will be there sooner = less lag.
Obviously if I had plenty of spare cash I would have purchased
1.HKS T3G or similiar[3 grand complete kit s/hand from Lew]
2.Garret T 25 GT ball bearing turbo [rated at 320hp ee 3 grand new from horsepowerinabox.com for two]
The T25G is .64 exh and .80 inlet-it is recognised apart from its smaller sibling [the t25 from s18] by its bolt on style flange faces on inlet and outlet.[the t25 has push on and clamp style fittings]
The 320hp Garretts are.60exh and .62 inlet [gt25]obviously their large power rating comes with the ability to push higher boost due to modern design and ball bearing construction allowing them to spin faster without self destructing.
{world-its time to push the button}
There are a pair of these on nissansilvia.com for approx $2200 with a new warranty.The t25G's are sometimes available for $300 or less s/hand in good cond.I think they offer very good value as a budget upgrade if you dont mind getting your hands dirty.
So,time will tell if I can get the 400 at the wheels but I have bet with my hard earned that its possible.Open for discussion at this stage.
Cheers.Pete.
Sun, 27 March 2005 13:38
