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Old 07-06-2013, 04:05 PM   #1551
Patrick Olsen
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Massive progress being made here - painting things to make them pretty! I was going to get the valve covers and timing chain cover powder coated, but the quote I got was about double what I was expecting, and it actually would've been even more because they would've had to order in a color for me. So, I had the place blast the parts, and then I rattle canned them.

Color is VHT Engine Metallic "burnt copper". I wanted something with some "pop" to it to contrast with the silver of the car. Obviously red is too normal, what with that being the STI intake color. I don't plan to paint the intake manifold this color; I might paint the plastic EZ30R manifold with wrinkle black just to jazz it up a little bit. We'll see.





The PC place obviously used something pretty aggressive to blast them, as all 3 parts have quite a bit of texture now that they didn't have before. Looks just fine, but I was kind of surprised at that when I picked the parts up.
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Old 07-07-2013, 12:28 AM   #1552
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i like the look of the texture, but i won't be painting mine haha.
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Old 07-07-2013, 11:00 AM   #1553
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May also have been the powder they used. I keep debating what color I'd like mine to be. Either just use BBS match or do black with red and/or gold fleck. But... Finishing 257 motor so the car will be on the road for now.
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Old 07-08-2013, 06:48 AM   #1554
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did we ever get a definitive answer on the weight of these engines?
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Old 07-08-2013, 09:21 AM   #1555
Patrick Olsen
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Yes. That's from another thread, but it's posted in this thread, too.

I'll try to remember to weigh the EZ30D when I get it back together. The heavier intake manifold obviously won't help for that one.
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Old 07-08-2013, 02:06 PM   #1556
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yep, looks like it's about 40kg heavier than what i'll be taking out then.

factor in all the weight of my supercharger, intercooler, heat exchanger etc etc... i reckon the net weight difference will be very little.
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Old 07-08-2013, 02:19 PM   #1557
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That's why suspension is one if the most important things to do to the car compensation and balance wise.
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Old 07-09-2013, 07:24 AM   #1558
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for those who did an A/C delete like me, you want a 1035mm drive belt to replace the stocko. should be an off the shelf/mass produced gates one.

i also cut off part of the alloy on the A/C mounting bracket to make it fit, but you can still run the pulley and the next size longer belt if you don't want to do so. though that does mean more rotating mass (parasitic loss) on the engine.

Last edited by vicious_fishes; 07-09-2013 at 02:17 PM.
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Old 07-10-2013, 03:55 PM   #1559
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here we go, a nice little snap of how the belt runs when you delete the A/C:



as you can see, i had to slice a bit off the A/C mounting bracket where a pulley used to be. you can still run that pulley and leave the bracket untouched but why have more rotating mass (parasitic loss) than necessary?


i'd really like a lightweight crank pulley but nobody makes an off-the-shelf one. i do have access to a super-duper-skilled machinist that could machine one out of an alloy block for me but it wouldn't be cheap.


but if anyone else is interested in one we could get a bit of a group buy going with him to lower the cost? just let me know the most you're willing to pay if you are and i can go and find out what he can do for however many we want.
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Old 07-11-2013, 12:11 AM   #1560
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just weighed SC and ancillaries - 25kg or so total. at least 11kg off the rad, which sits right up front where the bumper beam used to be.

car will probably handle exactly the same once the 6 is in.
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Old 07-11-2013, 12:32 AM   #1561
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Quote:
Originally Posted by vicious_fishes View Post
here we go, a nice little snap of how the belt runs when you delete the A/C:



as you can see, i had to slice a bit off the A/C mounting bracket where a pulley used to be. you can still run that pulley and leave the bracket untouched but why have more rotating mass (parasitic loss) than necessary?


i'd really like a lightweight crank pulley but nobody makes an off-the-shelf one. i do have access to a super-duper-skilled machinist that could machine one out of an alloy block for me but it wouldn't be cheap.


but if anyone else is interested in one we could get a bit of a group buy going with him to lower the cost? just let me know the most you're willing to pay if you are and i can go and find out what he can do for however many we want.
Isn't that crank pulley also a harmonic damper?
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Old 07-11-2013, 04:01 AM   #1562
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Yes its a harmonic balancer
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Old 07-11-2013, 04:19 AM   #1563
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Duplicate post
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Old 07-11-2013, 06:22 AM   #1564
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well yes it needs to be balanced obviously...
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Old 07-11-2013, 09:53 AM   #1565
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Harmonic balancers absorb torsional vibrations, its not a good idea to replace it, with a lightweight pulley, you would run a real risk of crank failure
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Old 07-11-2013, 11:30 AM   #1566
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Quote:
Originally Posted by Spec C View Post
Harmonic balancers absorb torsional vibrations, its not a good idea to replace it, with a lightweight pulley, you would run a real risk of crank failure
And yet the 6-cylinder engine is better balanced internally than any of the 4-cylinder Subaru engines and thousands of people are running light weight non-harmonically balanced crank pulleys on those without issue...
Yes you'd run the risk of it failing, but I think I'm willing to take that risk with an engine this smooth.
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Old 07-11-2013, 03:36 PM   #1567
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soooo... anyone interested in a lightweight pulley or not?
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Old 07-15-2013, 10:10 PM   #1568
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ok i haven't pulled my ej yet. can i use the EJ mounts i have (upgraded ones) on the EZ?

i saw the EZ has 3 bolts but if the front two line up i don't see why not?
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Old 07-15-2013, 10:33 PM   #1569
Patrick Olsen
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I don't have an EJ mount to compare to, but I was under the impression that there's no bolt pattern commonality at all.

I picked up my EZ30D heads from the machine shop today. Just had a basic multi-angle valve job done, nothing terribly exciting. I had inquired about getting them flow tested, but since this shop had no experience with these heads, they would've had to build fixtures for the flow bench, build fixtures to operate the valves on the bench, etc, and it was going to be more than I wanted to spend just to satisfy my curiosity.
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Old 07-16-2013, 04:28 AM   #1570
vicious_fishes
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i have no idea if the bolts are common or not - they just appear to be, judging by nothing other than naked eye.
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Old 07-16-2013, 06:33 AM   #1571
Seraphinwolf
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I'm going with no. Also if you go to order new ones order 01-04 D motor ones. The R ones are liquid filled crap
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Old 07-16-2013, 07:11 AM   #1572
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already got an ez30d mate
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Old 07-16-2013, 10:13 AM   #1573
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Quote:
Originally Posted by vicious_fishes View Post
ok i haven't pulled my ej yet. can i use the EJ mounts i have (upgraded ones) on the EZ?

i saw the EZ has 3 bolts but if the front two line up i don't see why not?
I believe the perrin biuld used ej mounts.
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Old 07-16-2013, 10:21 AM   #1574
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Quote:
Originally Posted by Duderotomy View Post

And yet the 6-cylinder engine is better balanced internally than any of the 4-cylinder Subaru engines and thousands of people are running light weight non-harmonically balanced crank pulleys on those without issue...
Yes you'd run the risk of it failing, but I think I'm willing to take that risk with an engine this smooth.
The big power 6 cyl builds (EG) over here that I have seen use a balancer at least one uses a US made balancer
I know of one who didn't and broke the crank
Even the most accurately balanced engine will suffer from torsional vibrations (harmonics), the ez crank is not the most robust I have seen however at the end of the day, its your engine
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Old 07-16-2013, 12:05 PM   #1575
Patrick Olsen
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Quote:
Originally Posted by Spec C View Post
I believe the perrin biuld used ej mounts.
As I recall they used Group N mounts, but removed the EJ top plate (the part that bolts to the engine) and made EZ plates.
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