Once and For All: How to time an Evo with a 4g64 Swap
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.
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
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So far, the car has yet to successfully make one of them, hence my complete overhaul
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Thread Starter
Joined: Aug 2011
Posts: 2,154
Likes: 5
From: Philadelphia, PA
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.
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.
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.
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.
Aaron
Ima build my own adapter. Just gotta figure out the thread sizes. Not a biggie. I'll report back with results later on today
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.
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.
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.
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.
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.
Thread Starter
Joined: Aug 2011
Posts: 2,154
Likes: 5
From: Philadelphia, PA
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.

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.
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.

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.
Thread Starter
Joined: Aug 2011
Posts: 2,154
Likes: 5
From: Philadelphia, PA







