Semi-DIY Mild Engine Build for FI

[StmpoRaceProducts]

Ross when ATI mentioned that there system is rebuildable does this implies that their system is prone to failure as well? And how often and why would a ATI rebuild be warranted?

batman... the benifit in ati's pulley is vibration reducbtiom... plain and simple.

vibration and oil are the two major factors in loosing a motor or exsessive wear on parts

 

[sparky]

BATMANs I'm curious re: the 12-sided nuts in the photo of your big ends. I've not seen them before, what's their purpose? are they OEM? If they are some special kind of non release nut how do they work?

 

[BATMANs]

BATMANs I'm curious re: the 12-sided nuts in the photo of your big ends. I've not seen them before, what's their purpose? are they OEM? If they are some special kind of non release nut how do they work?

WHich pic are u referring to?

 

[BATMANs]

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[sparky]

WHich pic are u referring to?

post #272 fourth image from the top. Also happens to have a big engraved
"4" at bottom of image

 

[BATMANs]

U must be referring to the ARP con rod nuts.

 

[sparky]

Yes, the big ends of the conrod are held on by 12 sided nuts ... what's the purpose of that unusual nut design? perhaps they have to be very highly torqued up?

 

[BATMANs]

Yes, the big ends of the conrod are held on by 12 sided nuts ... what's the purpose of that unusual nut design? perhaps they have to be very highly torqued up?

That part I dunno.

 

[myhui]

High torque for such a small piece of hardware.

 

[I1O101I]

any new updates on the motor build?

Bryan

 

[Mac Attack]

Nope. Thanks for reminding me to call the machinist!

Been busy off-roading....

Dave

 

[BATMANs]

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[BATMANs]

I'm on business trip to MN all day tomorrow. I'll be back on Thursday AM and one of the heads will be ready for flow testing which I should have a video of the event (something rarely seen for any engine builds and NEVER documented for the NSX head)

 

[Mac Attack]

I like the videos, especially the "watch your fingers" and "don't breath this" parts. Sounds like a pretty cool guy to let you video this too. Thanks again to both of you!

Dave

 

[RYU]

Fantastic videos. Admittedly, I cringed when he started cutting the valve seats. This guy works really fast! Holy crap. I'd be measuring 10x before I cut and probably still mess up. You can tell he's a craftsman.

Agree with Dave. Really cool he's letting you share his talent with the rest of us.

What a great thread and love the 80's background music in Post #278 lol

BATMANs - Sorry if I missed this.. but did you ever definitively figure out what was the cause of your engine failure?

 

[BATMANs]

I like the videos, especially the "watch your fingers" and "don't breath this" parts. Sounds like a pretty cool guy to let you video this too. Thanks again to both of you!

Dave

He looks and acts like the scientist from back to the future. He makes and sells latex Halloween masks on the side.

 

[BATMANs]

Fantastic videos. Admittedly, I cringed when he started cutting the valve seats. This guy works really fast! Holy crap. I'd be measuring 10x before I cut and probably still mess up. You can tell he's a craftsman.

Agree with Dave. Really cool he's letting you share his talent with the rest of us.

What a great thread and love the 80's background music in Post #278 lol

BATMANs - Sorry if I missed this.. but did you ever definitively figure out what was the cause of your engine failure?

Oh yea. He knows his stuff and moves so dam fast and can talk and narrate at the same time. He's been doing this for 45 years. Problem is that he is so good he had repeat customers diluting his time.

dunno the cause of engine failure but all ringlands popped.

 

[BATMANs]

Video of the shop and my project.

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[StmpoRaceProducts]

Video of the shop and my project.

https://www.youtube.com/watch?v=3S0_b_UNH0U&feature=youtube_gdata_player

batmans...lol.. always gettin in trouble

 

[Mac Attack]

Mt timesert kit came in so I'll drop it off this week at the machinist. Apparently, I was holding him up from doing the block decking, boring and honing since he wanted to do it after the Timeserts were installed.

The rotating assembly balance should be done, last I talked with him he said all of the weights had been figured out and he was ready to go.

Also, he did a pre-disassembly pressure test on the heads and said they were in excellent shape. I'm going to go ahead and have everything disassembled, valves measured, decarboned, cut, and polished. Then do the 3-angle cut, replace the guides, and then figure out what to do with the springs/retainers/seats.

I'll see if he can also do what Batmans did on sharpening the intake port divider walls. I'm going to hold off on the fancy head coatings though :smile:



Lesson to others contemplating doing engine rebuilds:

I should have gotten him all these parts BEFORE racing season started :redface: His racing customers, rightfully so, have priority. I'm in no hurry and just pleased that it's in good hands. Also, you may have some bargaining power on the machining prices too during the "off season." Of course, that really wasn't a concern since machining costs pale in comparison to the aftermarket parts prices

Dave

 

[RYU]

Not sure if the pricing is sensitive info but it would be really great if you guys can give us lookie-loos an idea of how much this all costs and how they price these things (i.e. by job, by hour, by scope of work?)

 

[BATMANs]

I'm a bit bummed that I wasn't able to get a video footage of the heads flowing.

But I did get a call that the numbers looked much better than an average head from my engine builder.

He said that he has the numbers and will type them up.

What he is looking for are the specs on the stock cams so that he can make sense of all the numbers from the head work. Anyone have them handy?

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[BATMANs]

So my shop has been using this for years, maybe even decades and swears by it.

Never a single leak from using it.

Even if there are OEM gaskets like in the oil pan he will still use it in combination..

http://www.permatex.com/products/Au...uto_Permatex_the_Right_Stuff_Gasket_Maker.htm

 

[EAC]

I'm suprised you've never used The Right Stuff. It's a must have for 13B oil pans.

 

[BATMANs]

I'm suprised you've never used The Right Stuff. It's a must have for 13B oil pans.

I dun do my own work