NISMO 46cc Heads inspected... to be installed \m/, ^_^ .\m/
01-17-2004, 08:29 AM
#22
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Jason is more optimistic than I am!! I'm hoping for about 275+ on the dyno. SOME of the other mods we'll do at the same time include.... Nismo oil cooler, Nismo T-Stat, JIC Y-Pipe, JWT Pop Charger, AEM wide band A/F gauge, and dyno tuning by T/S. This is about as far as we can go with bolt on parts (other than a plenum) and we want to see what happens. After this project is up and running for a month we will start the new Forged motor for my car and throw on the Turbo kit as well. DAMN, I LIKE WORKING HERE!!!!
01-20-2004, 05:41 AM
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Originally posted by Nathan
Jason
When you get round to CC,ing the unswept area & do your calculations you will find these heads on the stock motor will be about 12.3 to 1 CR.
Also that 2mm you mention is what I was saying about the available cam followers not being in range for lash adjustment with the stock, Tomei , Nismo or any cam with the stock base circle.
Thats why Nismo has made available cam blanks so that the Engine builder can take advantage of the extra lift that these RZZ heads can accomadate
Jason
When you get round to CC,ing the unswept area & do your calculations you will find these heads on the stock motor will be about 12.3 to 1 CR.
Also that 2mm you mention is what I was saying about the available cam followers not being in range for lash adjustment with the stock, Tomei , Nismo or any cam with the stock base circle.
Thats why Nismo has made available cam blanks so that the Engine builder can take advantage of the extra lift that these RZZ heads can accomadate
01-20-2004, 06:06 AM
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Originally posted by g356gear
Enthusiasm and haste can breed disaster.... knowledge and experience are golden.
Enthusiasm and haste can breed disaster.... knowledge and experience are golden.
01-20-2004, 06:12 AM
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Originally posted by Jeff@Performance
This is why we test the products on my car first. It will give us a much better understanding of what happens if.......
This is why we test the products on my car first. It will give us a much better understanding of what happens if.......
Damn those Aussies.
01-20-2004, 10:02 AM
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Originally posted by Jason@Performance
but those were not THESE heads... different part numbers can mean a huge difference...
but those were not THESE heads... different part numbers can mean a huge difference...
01-20-2004, 12:59 PM
#30
Originally posted by Jason@Performance
but those were not THESE heads... different part numbers can mean a huge difference...
but those were not THESE heads... different part numbers can mean a huge difference...
The part # I mentioned ( 11091- RRZ30-1) was a # that was texta,d on the box the left hand head came in.
I have had these heads ( RRZ 46cc ) since June 19 2003 but was unable to mention them as they were supplied to us on a confidential basis for racing use.
We race in a Production based series here in Australia & our sanctioning body have not yet cleared these heads for use.
We are in the process of getting the blank cams ground to suit the new heads & with new pistons, applying to use the combination in this years championship.
01-20-2004, 02:02 PM
#31
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Originally posted by Nathan
They are THESE heads.
The part # I mentioned ( 11091- RRZ30-1) was a # that was texta,d on the box the left hand head came in.
I have had these heads ( RRZ 46cc ) since June 19 2003 but was unable to mention them as they were supplied to us on a confidential basis for racing use.
We race in a Production based series here in Australia & our sanctioning body have not yet cleared these heads for use.
We are in the process of getting the blank cams ground to suit the new heads & with new pistons, applying to use the combination in this years championship.
They are THESE heads.
The part # I mentioned ( 11091- RRZ30-1) was a # that was texta,d on the box the left hand head came in.
I have had these heads ( RRZ 46cc ) since June 19 2003 but was unable to mention them as they were supplied to us on a confidential basis for racing use.
We race in a Production based series here in Australia & our sanctioning body have not yet cleared these heads for use.
We are in the process of getting the blank cams ground to suit the new heads & with new pistons, applying to use the combination in this years championship.
01-20-2004, 02:44 PM
#33
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Originally posted by FLY BY Z
Yeah he said that on the first page.
Yeah he said that on the first page.
01-20-2004, 02:55 PM
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hey since the tomeis have to be shimmed and adjusted to fit the stock head maybe they will fit this head without adjustment. call sgpracing and see if kyle knows.
01-20-2004, 04:03 PM
#36
Originally posted by RedShft
will you still be able to run 93 octane with these heads? i think a PnP job would be a better money value personally.
will you still be able to run 93 octane with these heads? i think a PnP job would be a better money value personally.
But hears a little Math
Swept area + unswept area divided by unswept area = CR
Swept area: 3498cc devided 6 (cyls) = 583cc
Head CC 46cc + Head gasket area, aprox 5cc : total unswept area 51cc
583 + 51 = 634cc devided by 51 = 12.43 CR
01-20-2004, 04:14 PM
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Originally posted by Nathan
Jeff will soon be able to confirm or refute what I have been saying about these heads.
But hears a little Math
Swept area + unswept area divided by unswept area = CR
Swept area: 3498cc devided 6 (cyls) = 583cc
Head CC 46cc + Head gasket area, aprox 5cc : total unswept area 51cc
583 + 51 = 634cc devided by 51 = 12.43 CR
Jeff will soon be able to confirm or refute what I have been saying about these heads.
But hears a little Math
Swept area + unswept area divided by unswept area = CR
Swept area: 3498cc devided 6 (cyls) = 583cc
Head CC 46cc + Head gasket area, aprox 5cc : total unswept area 51cc
583 + 51 = 634cc devided by 51 = 12.43 CR
01-20-2004, 04:20 PM
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Originally posted by RedShft
will you still be able to run 93 octane with these heads? i think a PnP job would be a better money value personally.
will you still be able to run 93 octane with these heads? i think a PnP job would be a better money value personally.
This head may just be a high performance version of a stock piece intended just for the racers (as mentioned) like a Chevy "Bowtie" block that is thicker and can handle more power. These parts exist and it sort of sucks that they aren't compatible with other stock pieces. However, we shall see as soon as Jeff fits them.
01-20-2004, 04:27 PM
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Originally posted by Nathan
Jeff will soon be able to confirm or refute what I have been saying about these heads.
But hears a little Math
Swept area + unswept area divided by unswept area = CR
Swept area: 3498cc devided 6 (cyls) = 583cc
Head CC 46cc + Head gasket area, aprox 5cc : total unswept area 51cc
583 + 51 = 634cc devided by 51 = 12.43 CR
Jeff will soon be able to confirm or refute what I have been saying about these heads.
But hears a little Math
Swept area + unswept area divided by unswept area = CR
Swept area: 3498cc devided 6 (cyls) = 583cc
Head CC 46cc + Head gasket area, aprox 5cc : total unswept area 51cc
583 + 51 = 634cc devided by 51 = 12.43 CR
The deck height is 0 on this engine?