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Once and For All: How to time an Evo with a 4g64 Swap

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Old Apr 17, 2012 | 08:34 PM
  #31  
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From: milwaukee, wi
Originally Posted by 2006GSR
I have seen a different way of people doing it using the oem mivec line. Does MAP sell the litle piece that screws into the block? It looks really simple to make. Maybe ill attempt to make my own. Shouldn't be that hard.
send them a p.m. from what i understand its a bspt to strait thread adapter that they make in house for the fitting. bspt stuff is very hard to find.
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Old Apr 17, 2012 | 09:09 PM
  #32  
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Originally Posted by Blue91lx
I'm hoping Aaron can shed some light on this as well. I bought the 64 belt just because it was specific to the motor (longer) and I'll need a full 60K out of each belt, as the car is my DD and makes about a dozen 1200 mile round trips from Philly to Indiana a year.

So far, the car has yet to successfully make one of them, hence my complete overhaul .
one tooth is ~7.5 degrees. Your always half a tooth off because of the deck height. Advanced with the shorter belt and retarded with the longer belt.
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Old Apr 17, 2012 | 09:23 PM
  #33  
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Originally Posted by akauf
one tooth is ~7.5 degrees. Your always half a tooth off because of the deck height. Advanced with the shorter belt and retarded with the longer belt.
It's the highlighted part I'm confused about.
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Old Apr 18, 2012 | 03:37 PM
  #34  
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"We don't sell just the fitting, you can buy the complete line kit if you like."

I guess i will make my own. Shouldn't be that hard to find the correct thread pitch for a bolt to go into the block and a nut with the same thread pitch as the banjo bolt and drill a hole in the bolt and weld the nut to it.
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Old Apr 19, 2012 | 04:52 AM
  #35  
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Originally Posted by akauf
one tooth is ~7.5 degrees. Your always half a tooth off because of the deck height. Advanced with the shorter belt and retarded with the longer belt.
Because you're off by half a tooth, it depends on how you set it. Knowing that I was gonna be half a tooth off, I wasn't too picky about how the timing fell, and I ended up advancing one gear, and retarding the other. Just point the zero mark on the cam to line up with the stock timing marks on the valve cover.
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Old Apr 19, 2012 | 08:50 AM
  #36  
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Originally Posted by 2006GSR
Thank you.

Also what are my options as far as using the oem mivec line and what banjo bolt do i use to connect it to the 64 block were the oil dummy sensor use to be. The original banjo bolt is to big and will not fit. I do not want to drill and tap it since the engine is all putt together.
You can extend it. We dont always sell the braided line kit with the motors. It will need a custom fitting no matter what though for the feed.

Aaron
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Old Apr 19, 2012 | 11:00 AM
  #37  
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From: SD USA
Originally Posted by JohnBradley
You can extend it. We dont always sell the braided line kit with the motors. It will need a custom fitting no matter what though for the feed.

Aaron
Bummer.
Ima build my own adapter. Just gotta figure out the thread sizes. Not a biggie. I'll report back with results later on today
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Old Apr 21, 2012 | 05:29 AM
  #38  
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BUMP!!!!. Still waiting to hear from the gurus who have used the 4G64 belt to explain the timing adjustments for the Camgears?
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Old Apr 21, 2012 | 07:11 PM
  #39  
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Originally Posted by EvoPower81
BUMP!!!!. Still waiting to hear from the gurus who have used the 4G64 belt to explain the timing adjustments for the Camgears?
I believe a few gurus already chimed it.
First a few facts- the 4G64 belt is longer. When you install the 4G64 belt the marks on the stock cam gears will be off by 1/2 tooth, so you can either set it to be 1/2 tooth advanced or 1/2 tooth retarded. Your choice. Retarding it will improve top end power and reduce low end power. Advancing it will improve low end and hurt top end. My personal advice is to get adjustable cam gears so you can zero out the cam timing. And by 'zero out' I mean you should adjust the cam gear by 3.5 degrees to compensate for the 1/2 tooth difference in belt length since one tooth = 7 degrees.

Adjusting for the MIVEC gear is different. I prefer to set the MIVEC gear retarded and then compensate for the difference in the ecu. This is a safe way to set the belt since it reduces the chance of the valve hitting the piston if the MIVEC mechanism fails for any reason. A MIVEC failure may be unlikely, but I like to be certain about changing things.
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Old Apr 29, 2012 | 10:38 AM
  #40  
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Originally Posted by Dave W.
I believe a few gurus already chimed it.
First a few facts- the 4G64 belt is longer. When you install the 4G64 belt the marks on the stock cam gears will be off by 1/2 tooth, so you can either set it to be 1/2 tooth advanced or 1/2 tooth retarded. Your choice. Retarding it will improve top end power and reduce low end power. Advancing it will improve low end and hurt top end. My personal advice is to get adjustable cam gears so you can zero out the cam timing. And by 'zero out' I mean you should adjust the cam gear by 3.5 degrees to compensate for the 1/2 tooth difference in belt length since one tooth = 7 degrees.

Adjusting for the MIVEC gear is different. I prefer to set the MIVEC gear retarded and then compensate for the difference in the ecu. This is a safe way to set the belt since it reduces the chance of the valve hitting the piston if the MIVEC mechanism fails for any reason. A MIVEC failure may be unlikely, but I like to be certain about changing things.
Since I am using a 4g63 timming belt on my 2.4L build. How do I adjust it with the Oem mivec gear and adjustable exhaust gear? The more i read. The more it confuses me.
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Old Apr 29, 2012 | 10:58 AM
  #41  
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From: milwaukee, wi
the position of the teeth and belt arent whats important, what is important is that you line up the cams to tdc on the valve cover. dont worry about the mark on the toothed ring, line up the red one on the cam hub.

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Old Apr 29, 2012 | 02:15 PM
  #42  
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Ok so it doesn't matter what belt I use as long as the intake cam gear lines Up with the mark and then use the adjustable cam gear to line up the marks on the exhaust. Sounds simple.
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Old Apr 29, 2012 | 04:14 PM
  #43  
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n2oiroc, if someone would've explained this it in such a way that exhibits common sense (like your post), I would've never had to start this thread

For all of the folks like myself who were thinking too hard:

Follow the normal procedure for timing in the Evo Service Manual, and match up the inner marks on your cam gear with the marks on the valve cover.
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Old Apr 29, 2012 | 04:31 PM
  #44  
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From: milwaukee, wi
Originally Posted by Blue91lx
n2oiroc, if someone would've explained this it in such a way that exhibits common sense (like your post), I would've never had to start this thread

For all of the folks like myself who were thinking too hard:

Follow the normal procedure for timing in the Evo Service Manual, and match up the inner marks on your cam gear with the marks on the valve cover.
someone actually did and even posted a pic with the inner and outer marks, but i couldnt find the thread either. it was fairly recently too.
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Old Apr 29, 2012 | 04:43 PM
  #45  
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Originally Posted by n2oiroc
someone actually did and even posted a pic with the inner and outer marks, but i couldnt find the thread either. it was fairly recently too.
Shows my searching skills.
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