13b turbo to N/A Are the series 4 13B turbo motors as the naturally aspirates serie

dr50376272 · 10-18-2010, 07:16 PM

13b turbo to N/A

Are the series 4 13B turbo motors as the naturally aspirates series 4/5 motrors the same except for compressed rotors? can i chuck in N/A 13b rotors in a 13b turbo engine and all will be fine? ill be losing the turbo and periperal porting.

ill also use the 13b turbo manifold to get EFI.

regards

David Robertson
Japan 899-4332 kagoshima ken
kirishima shi kokubu chuou 1 choume
12-11-1

デイビッドロバートソン
８９９－４３３２鹿児島県霧島市国分中央１丁目
１２－１１－１

my car: www.kagoshimaenglish.com/rx4.htm

tweiss3 · 10-18-2010, 07:39 PM

The compressions are different

dr50376272 · 10-18-2010, 11:37 PM

so if i change the rotors from low to high compression, then i can run the engine N/A right?

730RWHP12A · 10-18-2010, 11:54 PM

Quote:

Originally Posted by dr50376272

so if i change the rotors from low to high compression, then i can run the engine N/A right?

yes

RotorDad · 10-19-2010, 10:58 AM

You can still run boost on all of these, just get your tune right. As far as the rotor specs I believe it goes like this.
13B rotor comparison:
1974-1978 / 9.2:1 @ 11.58 lbs
1984-1985 / 9.4:1 @ 11.58 lbs
1986-1988 NA / 9.4: @ 10.04 lbs
1987-1988 Turbo / 8.5:1 @ 10.04 lbs
1989-1992 NA / 9.7:1 @ 9.54 lbs
1989-1992 Turbo / 9.0:1 @ 9.54 lbs
1993-up Turbo / 9.0: @ 9.54 lbs
Renesis 2004-up / 10.0:1 @ 9.30 lbs

NoDOHC · 10-21-2010, 09:52 PM

Quote:

Originally Posted by DR50376272

ill also use the 13b turbo manifold to get EFI.

The 13b turbo manifold will not work with a peripheral port.

Otherwise, make sure that your entire rotating assembly is from the same series at a minimum.

rxspeed7 · 11-03-2010, 05:06 PM

Also whatever series and style(turbo or N/A) you have to run the appropriate counterweights and front rotating assemblies that came with that series.

Zack.

10-18-2010, 07:16 PM	#1
dr50376272 Rotary Fan in Training Join Date: Oct 2010 Posts: 80 Rep Power: 15	13b turbo to N/A Are the series 4 13B turbo motors as the naturally aspirates serie 13b turbo to N/A Are the series 4 13B turbo motors as the naturally aspirates series 4/5 motrors the same except for compressed rotors? can i chuck in N/A 13b rotors in a 13b turbo engine and all will be fine? ill be losing the turbo and periperal porting. ill also use the 13b turbo manifold to get EFI. regards David Robertson Japan 899-4332 kagoshima ken kirishima shi kokubu chuou 1 choume 12-11-1 デイビッドロバートソン８９９－４３３２鹿児島県霧島市国分中央１丁目１２－１１－１ my car: www.kagoshimaenglish.com/rx4.htm

10-18-2010, 07:39 PM	#2
tweiss3 Mazda Lover Join Date: Aug 2010 Location: Akron, Ohio Posts: 319 Rep Power: 15	The compressions are different __________________ 2004 Mazda6 V6 5-spd - still waiting on money for a motor 1991 Mazda RX7 NA 5-spd - my new DD with 145,000 miles

10-18-2010, 11:37 PM	#3
dr50376272 Rotary Fan in Training Join Date: Oct 2010 Posts: 80 Rep Power: 15	read so if i change the rotors from low to high compression, then i can run the engine N/A right?

10-19-2010, 10:58 AM	#5
RotorDad Big Ugly Join Date: Apr 2009 Location: Fredericksburg, Va Posts: 591 Rep Power: 17	You can still run boost on all of these, just get your tune right. As far as the rotor specs I believe it goes like this. 13B rotor comparison: 1974-1978 / 9.2:1 @ 11.58 lbs 1984-1985 / 9.4:1 @ 11.58 lbs 1986-1988 NA / 9.4: @ 10.04 lbs 1987-1988 Turbo / 8.5:1 @ 10.04 lbs 1989-1992 NA / 9.7:1 @ 9.54 lbs 1989-1992 Turbo / 9.0:1 @ 9.54 lbs 1993-up Turbo / 9.0: @ 9.54 lbs Renesis 2004-up / 10.0:1 @ 9.30 lbs __________________ *Boosted Big Body On 335's* PS3 ID: Rotordad 1986 Mazda RX7 GXL - Street ported 13BT, Haltech, 62mm, ect. 2006 MazdaSpeed 6 - Eagle, Wiseco, Cobb, ect.

11-03-2010, 05:06 PM	#7
rxspeed7 The fan hit the shit! Join Date: Nov 2010 Location: ocala,fl Posts: 152 Rep Power: 15	Also whatever series and style(turbo or N/A) you have to run the appropriate counterweights and front rotating assemblies that came with that series. Zack.