Anybody heard of "new waterpumps these days are missing a mounting hole for the alternator"? this is giving me ulcers

That is the one difference between the 8 and 9 water pump. The 8 pump doesn't have that threaded boss. The 9 has it because the alternator bracket mounts to it and can't use an 8 alternator bracket because the MIVEC system gets in the way.

To my knowledge the only option for a 9 pump is OEM. Only the 8 has aftermarket pump options. I think an 8 pump could be used on a 9 if you made a different alternator mount bracket.

oh man. that's exactly it. I think the shop got a Gates water pump for an Evo8 :( ugh just my luck
thanks

I hope that shop know what they're doing with your car man. That's not a mistake and Evo shop makes.

You can make the 8 pump work, but you need an 8 bracket, and you won't have the part of the bracket that goes to the intake manifold. My car has been fine like that for a long time.

I hope they do ... well i know they do, it must have slipped his mind. good thing i bought the IX cams... he bought a set too, which he is returning.
About 1 week to order/ship stuff, 2 weeks to put the car back together, 1 week to break-in/tune... they're really my only option right now :)

ATI Super Dampers... anyone using these? I hope this is good investment. Wondering why it doesn't seem popular (based on search results). TIA

I went Fluidampr on my car. Less of a pain to install and doesn't have service intervals like the ATI does. ATI is good stuff though.

Its one of those parts ive always said i should get one but i havn't got around to getting.

Good video here by HPA on them. explains pros and cons of each type etc

Fluidampr is cool until the bolts fail and takes out the timing belt.

That doesn't sound like a Fluidampr issue...

Not specifically, but it's a flaw in using the OEM design. The ATI uses two more bolts to hold the damper on the hub, and that simply doesn't happen. Have had OEM, grade 10.9 fail. and ARP 8740 starting to crack.

Also, the damper hub being press fit on the crank (ATI) makes it more effective. I've seen fretting/micro welding on the OEM gear and balance shaft delete spacer with both the OEM bolt and the ARP crank bolt. Suggests it's moving around since it's slip fit.

Odd, never seen that failure mode before. I'm not at all surprised to hear the damper mounting face fretting against the timing gear but that's not the end of the world. Viscous dampers cover a wider frequency range than elastomer based dampers which is my biggest draw to the Fluidampr. I'm also not a fan of the ATI being a larger diameter than OE which drives all of the other pullies faster.

Not just the damper face to the gear, but also the gear to the spacer, and then the face of the crank to the spacer (the spacer that replaces the balance shaft gear).

I've seen the issue mostly in cars that see the rev limiter or the 2-step a lot, so drag racing and autocross.

Makes sense, harmonics go crazy when the engine is on the limiter. I've seen similar on the rear of the crank where it meets the flywheel.

has anybody run one of these with a drysump with the pulley on the crank?