Performance cams 1.4/1.8

[zomby woof]

I've been looking for a 1.4 cylinder head and cams without much luck.

I'm a cam grinder, and looking at the possibility of developing something for both motors.

The 1.8 looks really easy. The 1.4 (for me) requires a complete head and cams so I can see the design, geometry, and cam/rocker/lifter relationship through complete rotation and at different lift and duration situations. It's how I develop a profile. Whereas most (if not all) other custom grinders will just grind the cam, I will only develop one (unless it's very simple like the 1.8 - though I would still prefer a head and cams) in the head.

I have been grinding predominantly Suzuki, and some Isuzu cams for the last 15 or so years, and had my own line of oversized SS and polished SS valves. I still do them, but since buying a Sonic, seeing the community, and lack of options, thought I would look into it.

So now you know why I'm looking for a head. If anybody is interested in helping, please post or PM me.

 

[Eric Smit]

Man, I wish you were in Waterford Michigan not Waterford Ontario.

 

[Blue Moon Sonic]

If I had a spare head sitting around, I would send it out. Performance cams and an aluminum intake manifold with velocity stacks and water/meth bungs built into it are the 2 things I would like to see made for these cars. That and I would like to see a 2-step/anti-lag systems. Would love to hear a sonic go pop pop and spit out a fireball while getting ready to launch.

 

[greg51]

cams

Webcam has a profile -Hardweld on stock core. They told me they also have done more rad profiles. I have been looking , I think its cheaper to buy a complete engine Here we can get them $350-450. I was thinking about geting some cams done, will see. g

 

[ScarabEpic22]

I have a spare head, but Im in Seattle, WA and shipping would kill it.

I'm interested to see what results can be had with some cams, the 1.4 is limited by turbo airflow right away. Cam profile wouldn't help this as it simply cant flow enough air plus with VVT, we can tune around some cam limitations.

 

[zomby woof]

Not really.

The 1.4 is limited by cylinder head airflow, which is why you can generate 20psi of boost. This can be alleviated by opening the valves higher (increased lift) and longer (increased duration). The turbo is outflowing the motor, creating pressure in the intake tract, and more cam will solve that. When properly cammed, you will make more power on less boost - which is far better because pressure creates heat, and heat is terrible for power. You want flow, not pressure.

VVT is great, but it's allowed the manufacturers to run far less cam than they used to. So you can move them around all you want but you still don't have enough lift and duration.

 

[Flyer]

I have a head and would ship it to you if you are serious. PM me and let's work some details out.

 

[carsNskis]

Yaaaaaas I LOVE THIS THREAD!

 

[zomby woof]

Flyer and I are working on something right now. It's a very busy time, and will be through the summer, but I will post as there's progress. Also spoke to my valve manufacturer, and they're willing to at least look at and quote on a run of 1 pc swirl polished SS valves, in .5 mm oversize to start.

 

[TheGreenDragon]

Daaaaaang!

This is exciting!

 

[2014 Blue RS]

Exciting stuff

Sent from my SM-G930V using Tapatalk

 

[a2mike]

I've been looking for a 1.4 cylinder head and cams without much luck.

I'm a cam grinder, and looking at the possibility of developing something for both motors.

The 1.8 looks really easy. The 1.4 (for me) requires a complete head and cams so I can see the design, geometry, and cam/rocker/lifter relationship through complete rotation and at different lift and duration situations. It's how I develop a profile. Whereas most (if not all) other custom grinders will just grind the cam, I will only develop one (unless it's very simple like the 1.8 - though I would still prefer a head and cams) in the head.

I have been grinding predominantly Suzuki, and some Isuzu cams for the last 15 or so years, and had my own line of oversized SS and polished SS valves. I still do them, but since buying a Sonic, seeing the community, and lack of options, thought I would look into it.

So now you know why I'm looking for a head. If anybody is interested in helping, please post or PM me.

Do you know the specs of the stock 1.4 LUJ/LUV cams?

Is it the same as the NA LUU (84hp) engine?

If so, wouldn't the cams from a A14XER/LDD or A14XFR/L2N (99hp) engine be an upgrade?
I know the overlap might be different and not good for a turbo application unless the vvt can be tuned for it.

I know stock-wise, the intake cam has much more lobe lift (.175") than the exhaust (.139")

 

[zomby woof]

I have no idea what the specs are, that's one of the reasons I need to get my hands on some parts

 

[Blue Moon Sonic]

Not really.

The 1.4 is limited by cylinder head airflow, which is why you can generate 20psi of boost. This can be alleviated by opening the valves higher (increased lift) and longer (increased duration). The turbo is outflowing the motor, creating pressure in the intake tract, and more cam will solve that. When properly cammed, you will make more power on less boost - which is far better because pressure creates heat, and heat is terrible for power. You want flow, not pressure.

VVT is great, but it's allowed the manufacturers to run far less cam than they used to. So you can move them around all you want but you still don't have enough lift and duration.

Porting and polishing the heads would also increase this effect as well since it would smoot out and also increase airflow. So, if you were to increase the lift duration and have more air flow because of the port and polish job, and run the same 20psi on a tuned stock turbo. I would assume you would make 200whp happen with downpipe, intake and intercooler. On the other hand, the factory turbo upgrade from BNR will allow the car to say, reach 230whp. I'm just throwing random numbers out there, but it seems like that it would be possible to leave the turbo stock and make more power than what it's rated for based off what is said.

Feel free to correct me since this is actually a new subject for me.

 

[JesusTheAgnostic]

Porting and polishing the head means? Like the openings of the valves?

 

[Blue Moon Sonic]

Porting and polishing the head means? Like the openings of the valves?

Your basically opening up the valve ports and smoothing out airflow to allow more air to enter the intake and exhaust ports for when the valves open and close. Add a set of performance cams with extended lift with the correct designed overlap, and you get more power with less effort cause the engine can breath more efficiently.

 

[Toadz]

I shiver whenever I hear people say "port and polish". :blankface:

I would suggest having the head tested by a professional before messing around with bigger valves and porting as you'd be surprised how often I've seen power lost through these modifications. I'm not saying the 1.4 won't benefit from this but you won't know for sure unless it's properly tested beforehand.

 

[zomby woof]

I am a professional :banana:

 

[greg51]

cams

if your going to sell them why not buy 2 new cams ? Are you regrinding or hardface ?? g

 

[zomby woof]

I'm not selling or grinding anything until I see the application, and what the possibilities are. See the first post in this thread - I need a complete head and cams to do it properly. Too many don't do it properly.

Waiting on a head and cams from Flyer, but I'm in no rush at the moment as I'm quite busy