Its time for some upgrades on the B18C-R
Thread Starter
Drive Hard
Joined: Mar 2005
Posts: 66
Likes: 0
From: Oklahoma
Its time for some upgrades on the B18C-R
So i have had this swap for a while and its time to upgrade a few things. I have a JDM B18C type R and its mostly stock. The only thing I've done is:
Cold air intake
test pipe with 3" exhaust all the back
Supertrapp muffler
What I'm thinking about is proven power bolt-on's. This is a N/A set up and I mostly just race the car but i do drive it around town some. At some point I will want to make it a 2.0L.
So what really adds HP to this engine? 68mm throttle body? underdrive pullies? The headers I'm looking at are the stock JDM 4-1, Rage or HyTech, but hear Hytech is not making them anymore?!?!
Thanks for your help.
Cold air intake
test pipe with 3" exhaust all the back
Supertrapp muffler
What I'm thinking about is proven power bolt-on's. This is a N/A set up and I mostly just race the car but i do drive it around town some. At some point I will want to make it a 2.0L.
So what really adds HP to this engine? 68mm throttle body? underdrive pullies? The headers I'm looking at are the stock JDM 4-1, Rage or HyTech, but hear Hytech is not making them anymore?!?!
Thanks for your help.
Apathy Kills
Joined: Nov 2002
Posts: 60,714
Likes: 0
From: The Left Lane
As far as exhaust is concerned, the SMSP 4-2-1 stainless header is certainly worth considering. Ideally, you want to maintain a constant exhaust diameter from the last collector back to the tailpipe.
To be totally honest, I'm not exactly thrilled about the test pipe on a daily driver.
I'm not going to shit a brick over it, but breathable air is rather nice.
That aside, I would be looking into Crower's #63402 cam for the B18C1, paired with their springs, retainers and cam gears. All VTEC B-series cams are interchangable. When dialed in and paired some form of tuned ECU to control fuel enrichment, you should pick up 15-18 hp off the cams alone.
As far as the throttle body is concerned, you're not at a point where it's a bottleneck. Given your plans, I would just as soon budget for ITBs.
Also, if you do go for an underdrive pulley set, either keep the stock crank pulley or be absolutely sure the the UD pulley is harmonically balanced, for obvious reasons. No point in making 2 hp at the expense of your main bearings.
To be totally honest, I'm not exactly thrilled about the test pipe on a daily driver.
I'm not going to shit a brick over it, but breathable air is rather nice.
That aside, I would be looking into Crower's #63402 cam for the B18C1, paired with their springs, retainers and cam gears. All VTEC B-series cams are interchangable. When dialed in and paired some form of tuned ECU to control fuel enrichment, you should pick up 15-18 hp off the cams alone.
As far as the throttle body is concerned, you're not at a point where it's a bottleneck. Given your plans, I would just as soon budget for ITBs.
Also, if you do go for an underdrive pulley set, either keep the stock crank pulley or be absolutely sure the the UD pulley is harmonically balanced, for obvious reasons. No point in making 2 hp at the expense of your main bearings.
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Joined: Jun 2005
Posts: 672
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From: Allentown PA, - Phila, PA
So u have an ITR (C5) motor or a C1? Or are u just calling it a type-r? 
If you have an ITR motor, why would you need to buy headers? Didn't u get the ITR headers with the motor? If so, you don't need any aftermarket headers, as most companies just copy the ITR stock header and make it a bit larger, etc.
People rave about SMSP, but they are costly...
As for the test pipe, I don't think its helping you much, since you are N/A...
So what is it, B18C1 or C5?
If you have an ITR motor, why would you need to buy headers? Didn't u get the ITR headers with the motor? If so, you don't need any aftermarket headers, as most companies just copy the ITR stock header and make it a bit larger, etc.
People rave about SMSP, but they are costly...
As for the test pipe, I don't think its helping you much, since you are N/A...
So what is it, B18C1 or C5?
Thread Starter
Drive Hard
Joined: Mar 2005
Posts: 66
Likes: 0
From: Oklahoma
The "JDM" Type R engine code is just, B18C. In the US its called a B18C5. This engine did not have the header so I went with a stock GSR unit for now.
So for the amount I drive this around town... I would have to say about 20 miles a month. I wouldn't call it a daily driver but your right about the breathable air issue.
Guys, thanks for the input.
So for the amount I drive this around town... I would have to say about 20 miles a month. I wouldn't call it a daily driver but your right about the breathable air issue.
Guys, thanks for the input.
On permanent hiatus
Joined: Jul 2004
Posts: 9,716
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From: A forum with actual tech
That 3" exhaust is probably hurting your power a good amount. Even a fully built N/A motor doesn't need a 3". Unless you have future plans of turbo, you should really downsize that exhaust. 2.5" will be more than sufficient.
Like Dave said, a set of cams, intake manifold, and a tune will net some decent, usable power. I'm still using the stock TB at around 300 whp, so I doubt you are having any restrictions there.
Like Dave said, a set of cams, intake manifold, and a tune will net some decent, usable power. I'm still using the stock TB at around 300 whp, so I doubt you are having any restrictions there.
