R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro Off-Road

Reply
 
Thread Tools Search this Thread
Old 08-02-2007, 09:00 PM   #1
Tech Apprentice
 
Join Date: May 2006
Posts: 98
Trader Rating: 2 (100%+)
Default S7 engine temps

I just wanted to see what temps others are running their S7's at. Some guys at the track are running theirs between 265-275. I can't argue with their success, they have 10-12 gallons of fuel through a few of them. Mine seems to run at around 260 also. Everyone elses engines seem to run from 200-225. Anyone have input?
__________________
www.roarkfabworks.org
tubehead is offline   Reply With Quote
Old 08-02-2007, 09:08 PM   #2
Tech Elite
 
GHETTOTEACHER's Avatar
 
Join Date: Feb 2007
Location: Philadelphia
Posts: 2,162
Default

I have a S7 and it runs at 265 when racing. I'm running 30% and shimmed at 1.04. I find that most Novarossi based engines run fine at 260. My friends that have O.S for some reason they run bone cold(190-225). I find the compression on RB/Novarossi engines is greater and the pinch is more aggressive. I have about 15 Novarossi /RB engines. They all run in the 265 range. Everything sounds normal to me.
__________________
Herolin <---Traded my Airtronics for an Ipad and Laptop...
Soon to be GHETTOPRINCIPAL..
GHETTOTEACHER is offline   Reply With Quote
Old 08-03-2007, 08:10 AM   #3
Tech Addict
 
associatedguy's Avatar
 
Join Date: Oct 2004
Posts: 714
Trader Rating: 8 (100%+)
Default

It's fine. I would just be worried if you dont have any smoke.
associatedguy is offline   Reply With Quote
Old 08-03-2007, 12:43 PM   #4
Tech Addict
 
gubbs3's Avatar
 
Join Date: Aug 2006
Location: MN
Posts: 600
Trader Rating: 6 (100%+)
Default

That's about right. The S7 I run usually wakes up around 240 on a normal day. I just use my temp gun to check for problems. If your engine is consistently running 250-260 and suddenly comes off the track at 290 then you start checking fuel lines, torn exhaust gaskets, etc...
gubbs3 is offline   Reply With Quote
Old 08-03-2007, 12:51 PM   #5
Tech Master
 
RBMike's Avatar
 
Join Date: Jan 2007
Location: Santa Clara CA
Posts: 1,264
Default

As always look for good smoke comming out. I currently have three S7's and I rarely have to run them over 230. One of my S7's is the "europe" version which is very old but still operational. IMHO the S7 is one of the best motors you can by for an 1/8 scale car.
RBMike is offline   Reply With Quote
Old 08-03-2007, 01:27 PM   #6
Tech Master
 
Join Date: Mar 2007
Posts: 1,237
Trader Rating: 4 (100%+)
Default

Quote:
Originally Posted by RBMike View Post
As always look for good smoke comming out. I currently have three S7's and I rarely have to run them over 230. One of my S7's is the "europe" version which is very old but still operational. IMHO the S7 is one of the best motors you can by for an 1/8 scale car.
i agree for under 300 bucks it has awesome rip and has good life
mugenlife is offline   Reply With Quote
Old 08-03-2007, 07:13 PM   #7
Tech Apprentice
 
Join Date: May 2006
Posts: 98
Trader Rating: 2 (100%+)
Default

I've only got alittle over a gallon through mine right now. Sometimes it still feels slugish, like it doesn't have the punch when I need it. I'm running a Mugen clutch set up with black shoes and 2 1.0 springs and 1 1.1. I guess I'll just keep tuning on it. Thanks for the info.
__________________
www.roarkfabworks.org
tubehead is offline   Reply With Quote
Old 08-04-2007, 12:39 PM   #8
Tech Master
 
RBMike's Avatar
 
Join Date: Jan 2007
Location: Santa Clara CA
Posts: 1,264
Default

Run all three 1.1 springs with the Mugen black shoes (or 3 1.0's with the aluminium shoes), that will help & what pipe are you using. I've found the RB2020 with a 198 header is the best but if you want longer run time then the 2045 is better.
RBMike is offline   Reply With Quote
Old 08-04-2007, 08:11 PM   #9
Tech Apprentice
 
Join Date: May 2006
Posts: 98
Trader Rating: 2 (100%+)
Default

Right now I am running a JP-1 pipe. I haven't tried anything else on it. Thanks for the input on the clutch springs.
__________________
www.roarkfabworks.org
tubehead is offline   Reply With Quote
Old 08-05-2007, 02:40 PM   #10
Tech Apprentice
 
Join Date: May 2006
Posts: 98
Trader Rating: 2 (100%+)
Default

I've been looking at the RB2020 & RB2045. They both say they are for mid range. What is the difference between the pipes. Would I use the 198 manifold for both? How much longer run time does the 2020 give?
__________________
www.roarkfabworks.org
tubehead is offline   Reply With Quote
Old 08-06-2007, 08:28 AM   #11
Tech Master
 
RBMike's Avatar
 
Join Date: Jan 2007
Location: Santa Clara CA
Posts: 1,264
Default

The 2045 will give longer run times than the 2020 buy a couple of minutes (depending on how you drive) but the 2020 makes that motor have power you would not expect.
RBMike is offline   Reply With Quote
Old 08-06-2007, 09:16 AM   #12
Tech Adept
 
matts6887's Avatar
 
Join Date: Jan 2007
Location: Scottsdale, AZ
Posts: 102
Send a message via AIM to matts6887 Send a message via MSN to matts6887
Default

I hear ya about the pipe(s) and the power they make. I have a S7II in my buggy now, and before i was just using the dinky stocker pipe that it came with. Well, I went and got the RB pipe suitably rated for this engine(per a tech at rb service facility), and got the one he reccomended, and i couldnt not believe the difference in power once i switched. Ive only got a little over a gallon so far on my s7II, and every time I run it, it just seems to keep on getting stronger and stronger. I like this engine and pipe quite a bit.
matts6887 is offline   Reply With Quote
Old 08-06-2007, 03:42 PM   #13
Tech Apprentice
 
Join Date: May 2006
Posts: 98
Trader Rating: 2 (100%+)
Default

Right now I am getting about 7 minutes with the JP1 pipe. I would like to atleast keep that run time. Once my vacation is over I'm looking foward to getting a new pipe.
__________________
www.roarkfabworks.org
tubehead is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
How does glow plug temps affect an engine? Cain Nitro Off-Road 11 07-29-2007 09:01 AM
Mach .28 Engine Temps! jmaley Electric Off-Road 1 07-17-2006 05:12 AM
TEMPS??? aus jd 2703 Electric Off-Road 14 08-29-2005 06:15 PM
Higher nitro content = lower engine temps but.... Team Duratrax Electric Off-Road 9 08-15-2005 07:41 PM
.21 engine temps (F) - good region to be at? gonsped Nitro On-Road 1 12-06-2003 02:43 PM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 03:35 PM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net