Stock injectors being bored
#1
Rotary Enthusiast
Thread Starter
Join Date: Jan 2005
Location: orlando/st. petersburg
Posts: 769
Likes: 0
Received 0 Likes
on
0 Posts
Stock injectors being bored
I have read a few threads of people who "hear of people having problems with there secondaries being bored to 1300's." I just wanted someone who has experience to chime in with some insight.
thanks guys
thanks guys
#2
Rotary Freak
iTrader: (8)
Originally Posted by kuroi FD
I have read a few threads of people who "hear of people having problems with there secondaries being bored to 1300's." I just wanted someone who has experience to chime in with some insight.
thanks guys
thanks guys
#3
Eats, Sleeps, Dreams Rotary
I'm not entirely sure. 1300's had been repected for a long time and were considered a safe way to upgrade. Then came a rash of blown motors, leaky injectors, stuck open injectors, etc...
Some people have commented that NO injectors should be bored out as they no longer work as well or have the same life expectancy of non-altered injectors of the same size.
It's hard to tell. I'm sure with anything, there is a failure rate, but I hope it low as I also went the 1300 route. Why the 1300 demonstrated more press on the board versus enlarging the injectors to other sizes is beyound me.
If you can afford it, I think the safest way to do it is to get a aftermarket fuel rail that accomadates the larger non-altered injectors.
If not, go for the enlarged fuel injectors. Just keep an eye out on your system...
There are still some people with nicely running cars and 1300's that haven't reported any problems. I only have about 1000 miles on mine. The first 900 or so were for a break in so no boost.
Some people have commented that NO injectors should be bored out as they no longer work as well or have the same life expectancy of non-altered injectors of the same size.
It's hard to tell. I'm sure with anything, there is a failure rate, but I hope it low as I also went the 1300 route. Why the 1300 demonstrated more press on the board versus enlarging the injectors to other sizes is beyound me.
If you can afford it, I think the safest way to do it is to get a aftermarket fuel rail that accomadates the larger non-altered injectors.
If not, go for the enlarged fuel injectors. Just keep an eye out on your system...
There are still some people with nicely running cars and 1300's that haven't reported any problems. I only have about 1000 miles on mine. The first 900 or so were for a break in so no boost.
#5
Lives on the Forum
Join Date: Dec 2001
Location: San Lorenzo, California
Posts: 14,716
Likes: 0
Received 8 Likes
on
8 Posts
There may be a higher failure rate associated with bored-out injectors, but MANY people run them with NO issues. I doubt that RC Engineering would keep doing this if there was a significant problem with doing so.
The problem with going with 1600s and an aftermarket rail is that is pretty much makes passing emissions impossible. I have a car that can put down 360+ rwhp with a conservative tune on 91 octane, but can pass emissions by just swapping out my midpipe for my hi-flow cat.
The problem with going with 1600s and an aftermarket rail is that is pretty much makes passing emissions impossible. I have a car that can put down 360+ rwhp with a conservative tune on 91 octane, but can pass emissions by just swapping out my midpipe for my hi-flow cat.
#6
Senior Member
iTrader: (1)
Join Date: Jul 2005
Location: MO
Posts: 370
Likes: 0
Received 0 Likes
on
0 Posts
I've been running 1300cc secondaries with no problems. The only down side is that i had to get them cleaned after ~12k mi. because one of them started leaking a little bit. I'm waiting to drive it another 10k, waiting to see if i'll have to do it again. While it might not be the absolute *best* way to go, i would say it's a fairly good alternative if you don't have the money to blow on new injectors. But if you do have the money, go ahead and go new. Either way you may have problems or you may not. Who knows? But yes, the liklihood would be greater with bored out injectors...even if only moderately so.
#7
Senior Member
iTrader: (1)
Join Date: Jul 2005
Location: MO
Posts: 370
Likes: 0
Received 0 Likes
on
0 Posts
Actually, come to think of it...i don't remember if it was my primaries or secondaries that were leaking. It may well have been the stock 850cc secondaries that were move to the primary position that had the leak. The bored out secondaries were 1200cc and had nothing wrong with them, but i went ahead and got them enlarged to 1300cc while they were out being cleaned. Yup...that's what happened. So bored out 1300s...i give em two thumbs up based on personal experience.
Hope that helps.
Hope that helps.
Thread
Thread Starter
Forum
Replies
Last Post
trickster
2nd Generation Specific (1986-1992)
25
07-01-23 04:40 PM
Megasquirt timing map and EGt ?? what do you guys think
immanuel__7
Megasquirt Forum
3
08-22-15 09:34 PM
armans
3rd Generation Specific (1993-2002)
5
08-15-15 09:08 PM