Single Turbo RX-7's Questions about all aspects of single turbo setups.

850's and 1600's... what fuel pump should I use...?

Thread Tools
 
Search this Thread
 
Old 11-05-03, 03:18 PM
  #1  
I Sold My Car 2 the Devil

Thread Starter
 
wonder1and's Avatar
 
Join Date: Oct 2001
Location: Duncanville, Tx
Posts: 2,361
Likes: 0
Received 0 Likes on 0 Posts
850's and 1600's... what fuel pump should I use...?

I'm noticing some hesitation under load... I'm starting to think that it is my FP not putting out enough. It just kinda "misses" There could be ton of stuff wrong, but I was unsure if my RP fuel pump would be adiquate for that much fuel foing into my motor... Thanks!
Ryker
Old 11-05-03, 03:30 PM
  #2  
Senior Member

 
Join Date: Dec 2002
Location: cali
Posts: 639
Likes: 0
Received 0 Likes on 0 Posts
More likely ignition, but we need the whole picture.
Old 11-05-03, 04:02 PM
  #3  
Senior Member

 
boostedrotor's Avatar
 
Join Date: Apr 2002
Location: dallas
Posts: 297
Likes: 0
Received 0 Likes on 0 Posts
how much boost r u running......i was told that that pump, which is the supra pump, starts dropping psi @ 22-24, sometimes even less than that...
Old 11-05-03, 04:15 PM
  #4  
I Sold My Car 2 the Devil

Thread Starter
 
wonder1and's Avatar
 
Join Date: Oct 2001
Location: Duncanville, Tx
Posts: 2,361
Likes: 0
Received 0 Likes on 0 Posts
Actually... no boost... MY cars not tuned yet...

Full picture...
RP Fuel pump
1600's sec.
850's Primary
Aeromotive FPR
Jacobs rotary pro pack
NGK Wires and 11's for plugs
Jacobs leading coil pack
HKS TA45CR
PFC
APex'i FMIC
New wiring harness
J&S knock sensor
4 vac. lines

Anyway.. any ideas? I wasn't sure if it was fuel or not..
Thanks,
Ryker
Old 11-05-03, 05:19 PM
  #5  
Laying Down Rotary Law

 
kabooski's Avatar
 
Join Date: Mar 2001
Location: central florida
Posts: 2,075
Likes: 0
Received 1 Like on 1 Post
no dude it's not the fuel pump

Its Tuning!

take it to RP for the love of god its next door
how far is it to garland 30 miles?

BTW: I got the same injectors
and I have a FP that flows less


Last edited by kabooski; 11-05-03 at 05:23 PM.
Old 11-05-03, 06:18 PM
  #6  
Lives on the Forum

 
rxrotary2_7's Avatar
 
Join Date: May 2001
Location: southern NJ
Posts: 5,097
Received 1 Like on 1 Post
probobly to rich... like dumping in to much fuel w/ a carb. like if using a holley 650 DP there is always that *dead* spot from to much fuel....
Old 11-06-03, 10:03 AM
  #7  
I Sold My Car 2 the Devil

Thread Starter
 
wonder1and's Avatar
 
Join Date: Oct 2001
Location: Duncanville, Tx
Posts: 2,361
Likes: 0
Received 0 Likes on 0 Posts
ahh... ok... off to the shop I go
Thanks guys!
-Ryker
Old 11-07-03, 12:54 AM
  #8  
I Sold My Car 2 the Devil

Thread Starter
 
wonder1and's Avatar
 
Join Date: Oct 2001
Location: Duncanville, Tx
Posts: 2,361
Likes: 0
Received 0 Likes on 0 Posts
Sooo... My Jacobs box is out! Now running on 2 plugs... thats the pits, but it is under warranty Motor is weak anyway... need to be carful.

Anyone know what the 10lb HKS WG spring is colored?
yellow?
Thanks,
Ryker
Old 11-07-03, 08:37 AM
  #9  
no

 
suganuma's Avatar
 
Join Date: Apr 2001
Location: Dallas, TX / Tokyo, Japan currently
Posts: 2,295
Likes: 0
Received 0 Likes on 0 Posts
Originally posted by wonder1and
Sooo... My Jacobs box is out! Now running on 2 plugs... thats the pits, but it is under warranty Motor is weak anyway... need to be carful.
huh? don't run just on trailing....

The jacobs should be wired so that you can join the stock wiring back together without the amp. I'm guessing you used the GM connectors RP supplies with the Jacobs.
Old 11-07-03, 12:08 PM
  #10  
Hey, where did my $$$ go?

 
SPOautos's Avatar
 
Join Date: Feb 2001
Location: Bimingham, AL
Posts: 4,413
Likes: 0
Received 0 Likes on 0 Posts
If it were me (which it isnt) I'd just run a single MSD on leading with the stock coils and I'd also pull out those 11's till its time to tune. Your just going to foul them since your car isnt tuned.

Also, I'd ditch the J&S, it only retars leading and can cause negitive split, especially if you run a pretty tight split to begin with. If you get tuned good you shouldnt need a J&S.

BTW - How much fuel pressure are you running at idle???

STEPHEN
Old 11-07-03, 02:29 PM
  #11  
I Sold My Car 2 the Devil

Thread Starter
 
wonder1and's Avatar
 
Join Date: Oct 2001
Location: Duncanville, Tx
Posts: 2,361
Likes: 0
Received 0 Likes on 0 Posts
40psi... I pulled the wires to the leading and put the trailing in their place... I'm not exactly going very far... I probably won't drive but mabe50 miles the next couple of days. I'll probably swap plugs though... those damn 11s are expensive! Sweet... polished manifold and TB just showed up!
Old 11-11-03, 10:35 AM
  #12  
Junior Member

 
Join Date: Nov 2003
Location: Trinidad
Posts: 47
Likes: 0
Received 0 Likes on 0 Posts
The SX is it man...check it out...
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
trickster
2nd Generation Specific (1986-1992)
25
07-01-23 04:40 PM
Queppa
New Member RX-7 Technical
8
09-02-18 09:53 AM
Rotospectre
New Member RX-7 Technical
3
03-28-18 03:33 PM
ChrisRX8PR
Single Turbo RX-7's
21
10-18-15 04:01 PM
Clacor
Single Turbo RX-7's
0
08-14-15 09:17 AM



Quick Reply: 850's and 1600's... what fuel pump should I use...?



All times are GMT -5. The time now is 01:32 AM.