Cam question

[GoSailin]

Hey guys. Anyone done cam work in their type r yet or know from experience how it handles it?

It does not seem to be as popular a job as compared to Chevrolet. I know it works VERY WELL with Chevrolet on a longevity basis and drivability. You gain more power at the top end of the power band plus an increase in max RPM. However I am totally new to the idea of camming a Honda lol. So if anyone has any experience or information on the pros/cons of this please share them. I am researching this now and trying to find a balance between drivability and performance, which means probably stage 1 maybe stage 2. So far it looks like 4piston and Skunk are the main companies making cams. 4piston has a good article on their build and results. I was looking for some more details though. Any other good articles out there? Not much on YouTube either that I can find.

For clarity, I’m not building a full race car. I’m building a 400whp on 93 pump, daily, some potential track time. Not using flex. From what I understand, even with full bolt ons I’m not going to get to 400whp on pump gas. FBO as in Hondata, dyno tune, intake, inlet charge pipe, down pipe, intercooler + pipes, with full exhaust. I think im going to be short 30-40whp short of that goal?

other related questions:
What kind of RPM max can these engines do before taking substantial life off the engine? 8000?, 8500?, 9000? it feels like Honda restricts this for pure reliability to reach the 300,000+ mileage life. You can notice some of this just by listening to the engine or exhaust during dyno tests. There is more there available or at least seems like it. How is that tractor lope after the cam? Nothing is going to compare to that Chevrolet lope I know, but how does it sound on a 4 cylinder?

lengthy thread I know but I wanted to get some discussion on this from anyone else who has considered camming!

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[GoSailin]

Okay found out according to a cam comparison video by tegiwa that should be good up to near 9000 rpm on a stock oil pump but anymore they say should look at changing. The civic they were working on though was not an FL5 it was an older model.

 

[matts67]

In forced induction applications, it’s far less common…you’ll get much more bang for the buck and better gains overall by improving the efficiency of the intake/exhaust/turbo setup and upping the boost.

 

[GoSailin]

In forced induction applications, it’s far less common…you’ll get much more bang for the buck and better gains overall by improving the efficiency of the intake/exhaust/turbo setup and upping the boost.

Makes sense then considered both costs are relatively the same. That is something I didn’t think about, NA and turbo applications. Although we still see cams with superchargers and turbos, perhaps the priority would be to upgrade the turbo and if you want more later then do a cam package..

 

[matts67]

Yup...not to mention, you can easily exceed the power capabilities of what the engine can handle, and what the chassis can put down, without touching the cams on these cars.

 

[Integra23]

Some prefer Kelford. I'm not sure how much gains there are without other head work. Upgraded springs will help with the RPM limitations

 

[svvitch]

My 2 cents not worth anything more

Turbo and fuel system upgrades are so easy without having to crack the engine open. No point in touching the cam when there are much easier and well documented and supported mods to easily get that 400 number I think. I'll be doing fuel pump next and maybe turbo and injectors not 100% sure.

 

[AZCWTypeR]

Common V8's have an uneven firing order. They can lope with a light flywheel and high lift cam.

CTR's have an even firing order. If a CTR is loping, you've likely got a bad cylinder.

I agree cams are low on the priority list of turbo Honda horsepower mods.

 

[GoSailin]

My 2 cents not worth anything more

Turbo and fuel system upgrades are so easy without having to crack the engine open. No point in touching the cam when there are much easier and well documented and supported mods to easily get that 400 number I think. I'll be doing fuel pump next and maybe turbo and injectors not 100% sure.

I believe that FBO + Tune will land the Type R around 360-380WHP. From what I have found, most builds that are breaking 400wheel are running flex fuel and/or bigger turbos. I suppose the only other option for breaking that mark and staying on pump is going with a bigger turbo, but is that really going to add 30-40WHP?

 

[nattypiso]

I believe that FBO + Tune will land the Type R around 360-380WHP. From what I have found, most builds that are breaking 400wheel are running flex fuel and/or bigger turbos. I suppose the only other option for breaking that mark and staying on pump is going with a bigger turbo, but is that really going to add 30-40WHP?

If you’re staying full bolt on’s with stock turbo, I think a modified high pressure fuel line will help get you pretty close to 400whp, along with possibly a ported intake manifold. Quality of gas and a reputable tuner is also important.

Although you said you’re not using this, it’s much easier to reach your goal with ethanol using Hondata’s CanFlex Fuel kit.

Adding a turbo will definitely push you past 400.. but your stock fuel system will most likely max out at high RPM’s and you’ll experience fuel pressure drops.

 

[Vito.FL5]

Stock valvesprings are good to a lot of revs. but what is the point? There are many other things that will not be very happy with those revs, like the hpfp, chain tensioner, rod bolts, oil pump, etc.

Also, bigger cams tend to work better with low exhaust pressures, and this is not the case when running lots of boost on a small turbo like the stock one.

400whp on a stock turbo is only possible on a very happy dyno, even on E85.

We are way past B-series era lol, rev to 7200 and be happy

 

[Two Step Performance]

Your time and money is MUCH better spent on a drop in turbocharger. Something like the 27WON Kuro makes an easy 425whp on 93 octane with the factory fuel system and offers a much nicer power curve. Not to mention no noticeable lag because the turbo is not oversized.

https://www.twostepperformance.com/...upgrade-kuro-for-2017-2021-honda-civic-type-r

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