I just got IM heads and mikuni carb kit installed on my GTR 35. With Marshmellow DB exhaust.

Do I need a prop with more cupping for best performance? I'm not sure what rpm's I'm running yet (maybe I should find that out first)...

No you dot need a different prop besides the stock one

Thanks bud...

But you need to get a tach

I'm reading all kind of bad reviews on here now about Iron Mountain heads.....are they really that bad!? (as shown in the picture comparison btw IM & SETX)

You could have just sent them your heads and had them worked instead of ordering those.

^^^^^ Oh no he didn't

I am in the same position as pintailhen...thought about removing heads but then if there is an issue I have to ship them or drive 4 hours to have them worked. With the IM heads there is an authorized dealer and service center within 10 minutes and another within 45 minutes. Ugh....

I'm just shocked by your logic. Apparently, I wasn't the only one.

When a customer sends in Factory heads in to get worked on do they install new seats, guides, valves, springs, polish and all? Also recommendations on decking the heads.....In my opinion that shouldn't be done until the bottom end is done. Correct me if I'm wrong.
Didn't mean to hijack a thread just thought it was a good place....



It's not slow....its big...and you just see it for a long time.

With all due respect, Hyper, yours are 2 yrs old. A lot of things have changed since then. The quality control being one them. Couple yrs ago, the IM's were pretty good, but seems their more concerned with quantity now. Just my .02.

I've driven to see Cody both times I've had anything done to my motor. I understand about the authorized service center but what are they gonna do? Ship em back to Utah? They sure not gonna fix em themselves. It is well worth the drive for me to know I'm getting the best and work that's done right. I can't say enough good about Cody and his work

is he still doing them now or did that get sub'd out to the Chinese too?

Thanks for clearing that up

First we like to work heads that have at least 40 hours, good rule of thumb that the seats have settled at their stopping point. We put new stainless steel stock replacement one piece valves, remove the valve guides, (definitly don't wanna port with guides in place cause you start eating away at the guide making it easy for the valve stem to move around), port polish, port match intake manifold, Deck the heads accordingly, port the intake manifold, port the black death intake. Then, reinstall the guides, 3-5 angle cut the valves, lap the valves to the seats, put new valve retainers, shim springs accordigly, reinstal springs and keepers. Make sure the valves move freely in the guides, reassemble heads and enjoy.

Have IM heads, tuned up by Cody

Then your good

Thanks take em

Sent from my XT907 using Tapatalk 2

Yea junk! theres another post on her comparing them with pictures. I'll look for it and post it on here.

Beat ya
viewtopic.php?f=3&t=34027

Thanks.

This is fixing to get good.

Well chuck you farley.

Those pictures will never go away, whats the saying "Perception is Reality"