KZR750R1 2006 OBXT Head Gasket/Motor Refresh

Mine didn't' come out clean. If I remember right there is a lip on either side of the mating surface. Pulling them out a couple of the lip disintegrated.

 

Although high on the head I've had to fight these type of seals before on the KZ. Those are literally at the top. These laying on the side would be much more prone to leaking.

 

I'll get new ones. As for the gaskets... I hear ya.

 

One of those over the beer arguments about OEM. Although an aftermarket company may get lucky and build a better mouse trap. OEM spend millions in R&D that the little guy usually isn't... I vote OEM head gaskets as well.

Edited October 11, 2014 by kzr750r1

Did you have the heads resurface? This is the most important part of the build. I learn this the hard way the 1st time I redid my head, oil squirting out all over the place.

Not yet... Will happen.

Good

Finally made it over to Hayward today. Remember why I don't live in the east bay any more.

 

Hey now, Fremont's not that bad

So many bloody people. Increases the percentage if ignorant jack holes.

So many bloody people. Increases the percentage if ignorant jack holes.

 

Yeah, I get that. We live next to my in-laws, which is great with small kids.

 

Where have you relocated to?

That helps. Nothing like Grandma and Grandpa helping out with the butt nuggets.

 

Out in Tracy now after a stint in Livermore for a few years.

 

Ex and I tried a weekend in South Lake Tahoe a few years back. Guy walked into the elevator and asked "where you two from?" Hearing Tracy he then replied, "Tracy is an hour from everything."

 

Yup. Pretty much nailed it casino guy.

Hearing Tracy he then replied, "Tracy is an hour from everything."

 

Yup. Pretty much nailed it casino guy.

 

Don't think I could take the commute.. I work near 237/101. Don't know that much about Tracy though - I've only been "through" Tracy on my way to elsewhere

52 miles door to door if I go into the office. Office is on N. First.

Smooth hose clamp question...

 

Need hose clamps for the Free Range Hose kit and Rad hoses. Need to be smooth inside to keep from eating into the silicone hoses. There are two or three designs I see out there.

1) worm gear with overlaping band material covering the grooves.

2) stamped worm gear grooves.

3) pinch clamp style

 

I'm thinking #1 would be best.

Edited October 18, 2014 by kzr750r1

Smooth hose clam question...

 

Need hose clamps for the Free Range Hose kit and Rad hoses. Need to be smooth inside to keep from eating into the silicone hoses. There are two or three designs I see out there.

1) worm gear with overlaping band material covering the grooves.

2) stamped worm gear grooves.

3) pinch clamp style

 

I'm thinking #1 would be best.

 

You're overthinking it. Unless you REALLY tighten them down, you shouldn't experience any problems. Silicone seals quite well on its own.

You're overthinking it. Unless you REALLY tighten them down, you shouldn't experience any problems. Silicone seals quite well on its own.

 

That being said...I was just talking with WPMarky last weekend and he showed me where his hose clamps cut through the silicone because he tightened them down too much. So, depending on price it might be cheap insurance.

I think I have offered before Kzr75, but as long as it's not next weekend I would love to help out if you need any muscle / assembly help.

You're overthinking it. Unless you REALLY tighten them down, you shouldn't experience any problems. Silicone seals quite well on its own.

Not cranking down... Ensuring I have the control of the pressure applied and not a limitation of the hardware. The spring clamps we have were too much constant pressure and we see leaks. It's the not too much and not too little situation.

 

Regarding over thinking. Hope to never stop.

 

I think I have offered before Kzr75, but as long as it's not next weekend I would love to help out if you need any muscle / assembly help.

Will be here. Block is I hope next week. Heads with it or soon to follow. I'll be fitting what I can. Need to get a ring compressor. Eyeballing Company23 but I really want a solid sleeve type. Will be getting the cam gear wrenches fo sho.

Edited October 11, 2014 by kzr750r1

Update?

 

I should get mine back today... fingers crossed.

Good deal... Nice to hear your getting it back on track.

 

Called today... Blocks bored and honed. Rotating parts are still with the crank shop for polish and balance.

 

I should have band rehearsal happening on Wednesday so I'll go over before and pick up what is ready then. Gonna start pestering, these guys have had my parts for long enough.

 

Divorce kicked me in the nuts again with cash output... Had to pay just under a grand in legal and filing fees. But shits rolling forward and no more expected BS (or expenses) on that front after this week. Good riddance.

 

November is going to be tight as I will need to go out of town on business for two weeks. Least I'll get some OT jack out of the deal.

 

Guess I need to buy that ring compressor this weekend.

<- trying to stay married.

 

Sounds like progress.

 

I got mine back and wish it had been stolen or caught fire. The stupid cunts had the cylinders bored to get a 0.10mm clearance which is half as much again as Manley recommends (0.076mm). Not surprisingly it sounds like an old Chinese bus at normal temps. I did about 200km at good speed for run-in, not flat-out and not continuous high load, just a quick pace. Only during that drive did the noise quiet down. Basically I invested $3,500 in the motor and wiped twice that off the value of the car... no idea how I could sell this car on as it is unless I lie about it being a diesel.

 

From now on I'll be advising anyone that unless they are shooting for 400whp or above, a new factory shortblock is the way to go. If you want to build a block you have too many idiots and unknowns to deal with. It's not ******* worth it.

Edited October 20, 2014 by fahr_side
Pissed off

So wait. Your talking about the new or old pistons? Thought you honed up to 99.75mm and dropped new pistons?

 

It is progress, just slow. At this stage I expect da machine shop to be fair on the price. I've been more than accommodating on time allotted. Daily phone calls now.

 

Going to make a stab and get the rest of the parts.

Tomorrow complete a good second stab list of parts needed.

Start sourcing a paycheck at a time.

 

Have found the hose clamps I like but time to see if I can get the sizes needed and price that is reasonable. May buy bulk just to have some to share if they work well.

 

Tools are next. Ring compressor and the 3 company 23 wrenches for our motor.

Won a $50 amazon card but I don't like signing up for spam parasite web retailers.

I'll use it though. Vultures.

Don't get all crazy with ring clamps, find one that works and tighten it until it's firm. You may have to go back a week later after driving on the new motor and re-tighten it. I had to re-due both valve covers after 2 months on my new motor, so don't over think things, because you're gonna have to go back and re-tighten things after a few weeks.

All good. I understand, had plenty of experience with hose clamps in marine and land based applications. Hi, my name is KZR750R1 and I'm a hardware junkie.

 

Understood on the nut and bolt post break in. Yours start to leak after some heat cycles?

Yup, my valve covers started to leak after about 3 - 4 months of heat cycles. After redoing them, they haven leaked since.

Yup, my valve covers started to leak after about 3 - 4 months of heat cycles. After redoing them, they haven leaked since.

 

So.. Is this something that could also be tried on old valve covers ('05, 107k miles) that have started leaking? Or is it just time to replace them at that point?

So wait. Your talking about the new or old pistons? Thought you honed up to 99.75mm and dropped new pistons?

 

 

 

I meant the stock pistons. Since the bores weren't scored and we were boring them anyway, the pistons weren't inspected too carefully.

So.. Is this something that could also be tried on old valve covers ('05, 107k miles) that have started leaking? Or is it just time to replace them at that point?

 

Definitely time to replace the gasket.