2nd Gen General Discussion The place for non-technical discussion about 2nd Gen RX-7s or if there's no better place for your topic
Sponsored by:

'90 Turbo FC falls on face around 6k RPM

Thread Tools
 
Search this Thread
 
Old 11-02-22, 03:30 PM
  #1  
Junior Member
Thread Starter
 
Noodlez's Avatar
 
Join Date: Dec 2021
Location: Illinois
Posts: 8
Likes: 0
Received 0 Likes on 0 Posts
'90 Turbo FC falls on face around 6k RPM

Hello everyone,

So some quick notes.I just got my car back from the shop for some upgrades. After said upgrades, I noticed the car is having some problems. Also I am not the most experienced mechanic, so try and bear with me.

What was upgraded:

Fuel Injectors: 2x 1000cc and 2x 850cc
Fuel Rail
Fuel Pump
Fuel Lines
Spark Plugs and wires
Exhaust - catless, downpipe and midpipe
Fuel Cut Defender

Engine was rebuilt before upgrades, no porting done. Now around the 6k rpm area, the engine just gives up, like there's a rev limiter. It happens every gear under load, neutral it's fine.

Any clues as to where I should start looking for problems? Coils perhaps?

I can provide pictures and additional info if needed as well.

This was also posted on the new member forums, but it seems that doesn't get much attention, haha
Old 11-03-22, 09:12 AM
  #2  
Moderator

iTrader: (3)
 
j9fd3s's Avatar
 
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,826
Received 2,592 Likes on 1,841 Posts
why so much injector? how much boost are you running and what turbo?
Old 11-03-22, 11:30 AM
  #3  
Junior Member
Thread Starter
 
Noodlez's Avatar
 
Join Date: Dec 2021
Location: Illinois
Posts: 8
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by j9fd3s
why so much injector? how much boost are you running and what turbo?
Honestly I couldn't tell you why the injectors. I took it to a shop to modernize it and that's what they went with.

It has stock ECU and stock turbo. I've seen the boost get up to 7 psi.

Fuel pressure is around 35 psi at idle.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Noodlez
New Member RX-7 Technical
7
11-04-22 06:28 PM
rx7quebec
New Member RX-7 Technical
2
04-30-13 04:36 AM
cpjn
New Member RX-7 Technical
5
09-30-12 10:45 AM
FC3Spitsfire
General Rotary Tech Support
14
08-10-06 07:34 PM
rx7b13
2nd Generation Specific (1986-1992)
14
04-09-06 05:08 PM



Quick Reply: '90 Turbo FC falls on face around 6k RPM



All times are GMT -5. The time now is 05:21 PM.