4AGZE Conversion

Alex170984
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4AGZE Conversion

Postby Alex170984 » Thu Mar 16, 2017 3:31 am

Hi all,

I am in the process of purchasing a complete 4AGZE engine complete with loom, ECU, etc

Just wondering about camshafts...would I benefit from some HKS 264 cams or stick with stock?

Many thanks in advance

Alex

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aukword1
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Re: 4AGZE Conversion

Postby aukword1 » Thu Mar 16, 2017 8:01 am

I have a 4agze turbo and put in HKS cams. 272 intake and 288 exhaust. It sounds like a beast in idle lol. I would suggest upgrading the valve springs as well. If you are sticking with the stock ecu and supercharger, I don't know if there would be much benefit from doing this though. What are your future build plans with the engine?

Alex170984
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Re: 4AGZE Conversion

Postby Alex170984 » Thu Mar 16, 2017 9:31 am

I believe my engine is coming with an uprated pulley, 176/180mm and I will be designing/installation air feed for the IC heatsoak issues i'll probably face. That's about it really.

aukword1
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Re: 4AGZE Conversion

Postby aukword1 » Thu Mar 16, 2017 10:37 am

In theory any modification you do to allow more air in and more air to leave should be beneficial especially with a forced induction build. Are you using the 4agze ECU?

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Alex170984
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Re: 4AGZE Conversion

Postby Alex170984 » Fri Mar 17, 2017 2:19 am

Yes I am using the standard ECU

aukword1
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Re: 4AGZE Conversion

Postby aukword1 » Fri Mar 17, 2017 7:33 am

Well it couldn't hurt, but personally I'd opt to get an upgraded ECU to get the full benefit of the mods. How much boost will you be running with that 176/180mm pulley? close to 20psi?

Alex170984
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Re: 4AGZE Conversion

Postby Alex170984 » Fri Mar 17, 2017 9:22 am

I have no idea to be honest. Probably around 14-15.

aukword1
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Re: 4AGZE Conversion

Postby aukword1 » Fri Mar 17, 2017 7:13 pm

Okay well if you dont plan on running an aftermarket ecu just run the pulley and see how you like it. It might be good enough without the cams or ecu. It really just depends what you want out of the car.

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jondee86
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Re: 4AGZE Conversion

Postby jondee86 » Sun Mar 19, 2017 2:25 am

Alex170984 wrote:would I benefit from some HKS 264 cams or stick with stock?

Increased duration is not so desirable with a supercharged engine, as longer cams
increase overlap and allow some of the intake charge to escape to the exhaust
without being burned. On the other hand, increased lift does offer benefits. So if
you have adjustable cam pulleys you can close up the separation angle a little to
reduce overlap and still get the benefit of more lift.

There is a bit more to selecting cams for a supercharged engine than for N.A. You
can easily end up with less rather than more if you get it wrong. For the moment
I would suggest that you go with the above advice and stay with the stock cams
for a while. Then you can research the cam question in more depth to see what
works with the factory ECU, and what kind of gains are possible.

Cheers... jondee86
Give a person a fish, they eat for a day. Suggest they search before posting, and they learn a skill for a lifetime.

Alex170984
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Posts: 251
Joined: Thu Jun 20, 2013 4:08 am

Re: 4AGZE Conversion

Postby Alex170984 » Sun Mar 19, 2017 10:23 am

Hi Guys,

Many thanks for the replies.

Jon, that's what I was thinking! I'm going to stick with the standard camshafts for the time being. I'm going to be running a bigger pulley so I do not want to complete things by throwing in some cams that the ECU may have issues running.

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