Project RB26DETT'd 260Z has begun

Post by **240Z TwinTurbo** » Sat Nov 27, 2004 1:33 pm

First step is to ge the intake and intecooler finalized. I already have the intercooler mounted and will have the intake done by weeks end. I will next tackle the challenge of the twin GT25R turbos. The manifold will be another one off 321SS header with double slip merge collectors. BTW, my new RB26 sure looks good on the engine stand Thanks JOEL

Post by **NX95240** » Sat Nov 27, 2004 4:24 pm

damn that looks sooooo good. i bet it will be fun to drive.....

Post by **74260zt** » Mon Nov 29, 2004 8:45 am

James, I think this section is for the baby RB motor, not the hoss.... Thats seems to be to bulk of posts here....

Post by **Phat_Optimo** » Mon Nov 29, 2004 9:00 am

Looking good man... One off pieces I should be putting my 26 back together pretty soon.

Looks like we have the same pistons...yoursmine

Post by **gawdzilla** » Mon Nov 29, 2004 9:48 am

i found some rb26 pistons on raceeng.com

anyone know how the wisecos are compared to JE? the prices are about the same...also what rings did you use? total seal?

Post by **74260zt** » Mon Nov 29, 2004 11:20 am

I went ahead and got the rings JE sells for turbo apps. Hope they do well.... I bought my pistons from Summit, and they were cheaper than I've seen others try to sell them for...

Hows your project coming along??

Post by **gawdzilla** » Mon Nov 29, 2004 11:32 am

my block is ready to be machined. i stripped it completely, and my crank is standing up on its side. need to find a machine shop. then i can start buying my internals.

Post by **gawdzilla** » Mon Nov 29, 2004 11:37 am

was curious to find out how much you guys were paying/paid for machine work too...

boring/honing the block?

turning the crank?

thanks

Post by **Phat_Optimo** » Mon Nov 29, 2004 4:10 pm

Wiseco's have a coated skirt. JE's do not. See pic below. The coating helps the skirts lubrication. Not supposed to wear the skirt as bad. Also helps with the temps. Paid just under 700 for them through PolkPerformance.com. We are using the wisco rings considering they are high quality.I'm paying 500 for all my machine work. Includes baking head and block to remove carbon buildup, Punch block and hone to 87mm, install arp rod bolts, deck head and block, polish crank, Radial valvejob, Remove and reasemble valvetrain with new valve seals and set proper valve lash, mill small end of rod to accept the larger wiseco piston pin, I think thats all he is doing for me. We plan on polishing the inside of the iron block for faster oil drainback. If anyones curious as to why my pistons have been sanded on you can read some more about it here. http://www.theoldone.com/forum...17061

Post by **gawdzilla** » Mon Nov 29, 2004 4:34 pm

awesome info ... thanks. i'll definitely keep that in mind as a ball park. do you have AIM (aol instant messenger) or anything that I can talk to you quicker on? I have a few questions and that would probably be quicker... my AIM SN is blops714.

Post by **74260zt** » Mon Nov 29, 2004 4:43 pm

those are very nice pistons.... I think I paid right at $700 for the JE's with their brand rings.

I used Weisco pistons in my high comp Jet Ski, they were the best on the market. I didn't know I could source them for the RB26 when I bought the JE's...

Post by **Phat_Optimo** » Mon Nov 29, 2004 8:23 pm

74260zt wrote:those are very nice pistons.... I think I paid right at $700 for the JE's with their brand rings.

I used Weisco pistons in my high comp Jet Ski, they were the best on the market. I didn't know I could source them for the RB26 when I bought the JE's...

Thanks, thoes JE's are excellent off the shelf pistons as well. Funny thing about the Wisecos is I had no idea they were coated when I ordered them. I almost went with the JE's. I have used wiseco pistons in my old 2 stroke dirtbike and they performed very well so i decided to go with them. I really like that 260z you have. Since you have an older z I want to run this by you and see what you have to say. Theres an older guy with a 260Z around the year that you have that lives colse to my friend. This car has been sitting on the curb for a while (several yrs). Its been flooded out. The interior is garbage. The floor pans are rusted out. The paint is non existent but the body is straight and it does not run. My friend went over there to ask him what he wanted for it. My friend thought he'd take $500 considering its condition (basicly needs full restoration). The guy says 4,000 firm. We tripped out about that. Then the owner tells him that Nissan was trying to buy back these older cars and he would not sell it to them. Just wondering what you think about that? Is it worth 4K?

gawdzilla wrote:awesome info ... thanks. i'll definitely keep that in mind as a ball park. do you have AIM (aol instant messenger) or anything that I can talk to you quicker on? I have a few questions and that would probably be quicker... my AIM SN is blops714.

I'm Hybrid240tt on AIM. I sent you a message but I guess your busy. Says your online but have been idle for 2 hrs. I'll talk with you later.

Post by **74260zt** » Tue Nov 30, 2004 12:09 am

Thats funny... when Nissan WAS buying these Z's for restoration, it was the 240Z. At that time, every yahoo that owned a Z, no matter what year, instantly thought they owned a gold mine....

That 260z is prolly not even worth $500 if it has the rust you speak of.... One can find rusted out 260/280's very easy for that price and lower, any day of the week.

Lokk under 240Z in Ebay, and you'll notice how nice of a early Z that can be found for a decent price.

Post by **gawdzilla** » Tue Nov 30, 2004 6:03 am

yup, got your IM this morning. .. i had already went to sleep. couldn't read the article on sanding the pistons, but isn't it to avoid heat buildup on edges? btw- they look nice sanded down too!

How does sanding compare to thermal barrier coating or gold coating the domes?

sounds like wiseco is a good piston choice. maybe i'll get the domes coated instead of sanded (http://www.swaintech.com/price.html)

i'm also surprised your shop work is only $500... is that through a hook up?

Post by **Phat_Optimo** » Tue Nov 30, 2004 6:41 am

Mailnly for building a carbon base quickly. The roughness helps build the carbon layer faster. Basicly if I left it as is from Wiseco then it would take longer to build a good carbon base. I don't know much about coating the tops of the pistons I would guess it would help with temps. TOO would know more than I do about that.

Here is a quote from top engine builder TOO, aka The Old One."Most techniques used by head porters for re-shaping combustion chambers rely on the use of abrasives like cartridge rolls, which can be used to blend numerous complex shapes together smoothly. Typiclly, this will leave a semi-polished appearance. Some shops will use finer-and-finer grits of abrasive to create a highly polished combustion chamber, which is great for "looks", but lots of testing over many, many years continues to show that an engine has to have a base carbon layer on both the chambers and piston tops before it will make it's best power.Highly polished chambers require more time for this base carbon layer to develop."

Cutting down the sharp edges also has a positive effect with the flame front in the combustion process. What exactly I have not a cluse but I take his word for it.

I don't believe I'm getting a hook up on the machine work. He is very reasonable with his prices and does an excellent job. Heres a link to their website. http://bbandtracing.com/

Post by **andrave** » Wed Dec 01, 2004 4:08 pm

Hey are either of you guys running the stock turbos? that damn one off 5 bolt outlet flange has me hunting for a pair of gaskets... either of you know where to find em?

Post by **Phat_Optimo** » Wed Dec 01, 2004 4:17 pm

I'm gonna be running the stock turbos for a little while... atleast until its broken-in. I got new gaskets so you can gte my old ones which are still in serviceable condition. Let me know if you want them.

Post by **andrave** » Wed Dec 01, 2004 6:41 pm

yep, email is [email protected]

Post by **Dano** » Thu Dec 02, 2004 10:00 am

very very very sweet, make sure and keep us updated with your eye candy pictures!

-Dan

Post by **74260zt** » Sun Dec 05, 2004 4:05 pm

Check out this deal on RB26 forged pistons HERE

Post by **gawdzilla** » Mon Dec 06, 2004 5:58 am

not a bad price but already bought. also 88mm is the max bore you can go, right? eek

Post by **74260zt** » Mon Dec 06, 2004 12:18 pm

Yea, when I posted it, they wer'nt bought yet... your right about the size, I wouldn't go 88mm...

But hell, for the price, somebody got a good buy...

Post by **gawdzilla** » Wed Dec 08, 2004 10:08 am

the pistons are back up again...

Post by **accel junky** » Thu Dec 09, 2004 8:06 am

Awesome project. Should turn out nice.

Post by **74260zt** » Thu Dec 09, 2004 9:26 am

Here is a set of JE's Look Here

Post by **Phat_Optimo** » Fri Dec 10, 2004 7:11 am

Just wonder if you all did anything about the crank snout/oil pump issue? Do you all have any ideas about fixing it? I'm thinking about having a collar machined.

Post by **74260zt** » Wed Jan 26, 2005 4:51 am

Here is a few new pics as of 1/25/05. The manifold build has been on the back burner for awhile, but now is full steam ahead...

Modified by 74260zt at 7:40 PM 1/26/2005

Post by **accel junky** » Wed Jan 26, 2005 7:47 am

Updates are looking good. Nice work on the manifold.

Project RB26DETT'd 260Z has begun

Project RB26DETT'd 260Z has begun

Re: Project RB26DETT'd 260Z has begun (240Z TwinTurbo)

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