General Rotary Tech Support Use this forum for tech questions not specific to a certain model year

new to rx7

Old 03-22-18, 08:16 PM
Junior Member
Thread Starter
Join Date: Mar 2018
Location: Texas
Posts: 39
Received 0 Likes on 0 Posts
new to rx7

just bought a 13b series 4 for offroading purposes, it has carburetor conversion and omp block off, the engine came with no thermal pellet or thermostat. my question is are these necessary components for this engine build? I would assume they were lost and that they're necessary but as I am new to rotaries and this is a custom setup I am unsure, any advice or direction would be much appreciated

Last edited by cocopuffsman; 03-22-18 at 08:19 PM.
cocopuffsman is offline  
Old 03-26-18, 02:28 AM
Full Member
Join Date: Jan 2018
Location: CA
Posts: 84
Received 0 Likes on 0 Posts
You can run it with the carb or FI depending on what you need, you will probably want to use a carb, and the OMP you can keep it blocked off but you have to premix your oil with a special lubricant called Idemitsu. designed for rotaries, you mix it in the gas like chainsaw oil. I believe at least 1 oz per gallon if you have no OMP, this means 1 quart of Idemitsu Premix will only last 32 Gallons (2 Tanks in a car, 4 with OMP). Rotaries burn oil to keep lubed like a 2 stroke, If you are in a bind you can actually use 2 stroke oil. But be generous that is what lubricates the rotor and apex seals. The thermal pellet, I cant tell you much about, but the thermostat should be fine,just DONT overheat the engine. As you said it is a custom build, I would recommend an 85 psi oil pressure regulator upgrade if you are going to be wailing on it, but again being a custom build there is some stuff that is just owner preference, I am building a 12a engine for my 7, I am going to put the 85 Oil Regulator and Mazda Race Rotor Bearings, and a couple other goodies on the list. my nickname for that motor is Wankel9000, 9000 being the target RPM before each shift
RotaryRoadkill is offline  
Old 03-26-18, 08:30 AM
roTAR needz fundZ
iTrader: (1)
Join Date: Aug 2002
Location: Freeland, MI
Posts: 2,663
Likes: 0
Received 29 Likes on 29 Posts
you can live without the thermal pellet, if anything its better as it lets the rotor bearing get oil all the time, versus only when the oil is warmed up

the thermostat, you'll want one, it will help with cooling and not let the water go through the engine so fast that it cannot absorb heat
lduley is offline  
Related Topics
Thread Starter
Last Post
Jodie Harness
Introduce yourself
05-03-17 05:30 PM
Introduce yourself
02-24-15 01:38 PM
2nd Generation Specific (1986-1992)
03-09-13 07:14 PM
The Ace
2nd Generation Specific (1986-1992)
08-16-01 03:11 AM

Thread Tools
Search this Thread
Quick Reply: new to rx7

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.
  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: