87 turbo power
#1
87 turbo power
Okay so an n/a fc was the first car I ever owned. I loved it. Did some mods like an intake, full exhaust, struts, springs, strut bars, momo wheel and a short shifter. Car had such a great feel and it was a ton of fun.
Of course, everyone kinda gets tired of that n/a speed ![Blush](https://www.rx7club.com/images/smilies/smiley_emoticons_blush-reloaded3.gif)
Anyways, long story short, I'm now driving an 87 turboII and it's amazing. Just got the car going and it has
fresh rebuild, all new seals, fd corner springs
Extended streetport
3inch exhaust
stock s4 turbo
ported wastegate
disabled twin scroll
omp delete
aluminum radiator
electric cooling fan (needs shroud)
FCD
walbro 255 pump
old school hks BOV (sounds sweet)
aem wideband
still running stock 550cc injectors
act clutch
act alb flywheel
oookay now I know I need to go with some bigger injectors but I need to wait until I go to some sort of computer. I'm still looking at my options. looking at rtek but more leaning towards spending more money on a haltech and ditching the old wiring harness.
I will eventually go front mount at that point and focus on cooling.
Also the car lags a bit under about 3 -3.5k. This is, as I'm suspecting, is because of the porting and disabled twin scroll? Anything that can help the car get a little more low end power? However, I do have a SHITLOAD of top end.![Evil Grin](https://www.rx7club.com/images/smilies/smiley-evilgrin.gif)
What injectors should I look at? I'm leaning out for a split second right before the secondaries come on but it's really not bad. any ideas? Thanks guys. I'm loving boooooost.
![Nod](https://www.rx7club.com/images/smilies/nod.gif)
![Blush](https://www.rx7club.com/images/smilies/smiley_emoticons_blush-reloaded3.gif)
Anyways, long story short, I'm now driving an 87 turboII and it's amazing. Just got the car going and it has
fresh rebuild, all new seals, fd corner springs
Extended streetport
3inch exhaust
stock s4 turbo
ported wastegate
disabled twin scroll
omp delete
aluminum radiator
electric cooling fan (needs shroud)
FCD
walbro 255 pump
old school hks BOV (sounds sweet)
aem wideband
still running stock 550cc injectors
act clutch
act alb flywheel
oookay now I know I need to go with some bigger injectors but I need to wait until I go to some sort of computer. I'm still looking at my options. looking at rtek but more leaning towards spending more money on a haltech and ditching the old wiring harness.
![Icon Tup](https://www.rx7club.com/images/smilies/icon_tup.gif)
Also the car lags a bit under about 3 -3.5k. This is, as I'm suspecting, is because of the porting and disabled twin scroll? Anything that can help the car get a little more low end power? However, I do have a SHITLOAD of top end.
![Evil Grin](https://www.rx7club.com/images/smilies/smiley-evilgrin.gif)
What injectors should I look at? I'm leaning out for a split second right before the secondaries come on but it's really not bad. any ideas? Thanks guys. I'm loving boooooost.
#2
"stock S4 turbo"
"shitload of top end"
.
.
.
.
.
.
![rofl](https://www.rx7club.com/images/smilies/rofl.gif)
Probably right about the lack of grunt down low, assuming there aren't any timing issues or vac/exhaust leaks. As far as the lean spot, higher than stock boost will do that, hence why the rtek lowers the secondary transition point. Hope those injectors have been recently cleaned and/or you have an upgraded fuel pump or you might be getting to see the insides of that new motor sooner rather than later.
"shitload of top end"
.
.
.
.
.
.
![rofl](https://www.rx7club.com/images/smilies/rofl.gif)
Probably right about the lack of grunt down low, assuming there aren't any timing issues or vac/exhaust leaks. As far as the lean spot, higher than stock boost will do that, hence why the rtek lowers the secondary transition point. Hope those injectors have been recently cleaned and/or you have an upgraded fuel pump or you might be getting to see the insides of that new motor sooner rather than later.
#4
Moderator
![](/images/misc/20_year_icon.png)
iTrader: (3)
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,993
Received 2,691 Likes
on
1,905 Posts
i had the same trouble with my S4 T2, there was this stop sign on a hill, and MAN that thing would just NOT MOVE until it hit 3000rpm, so if you were on foot, you'd have won across the intersection.
i fixed it with a 20B.
but after the 3 rotor, i did a really similar 13B-T combo, except with an S5 turbo, and it was WAY better, in fact throttle response was awesome, car was totally a hoot to drive, even though it was only running 6-7psi.
so if you already have the 3" exhaust, i'd look for an S5 manifold and hotside
i fixed it with a 20B.
but after the 3 rotor, i did a really similar 13B-T combo, except with an S5 turbo, and it was WAY better, in fact throttle response was awesome, car was totally a hoot to drive, even though it was only running 6-7psi.
so if you already have the 3" exhaust, i'd look for an S5 manifold and hotside
#6
i had the same trouble with my S4 T2, there was this stop sign on a hill, and MAN that thing would just NOT MOVE until it hit 3000rpm, so if you were on foot, you'd have won across the intersection.
i fixed it with a 20B.
but after the 3 rotor, i did a really similar 13B-T combo, except with an S5 turbo, and it was WAY better, in fact throttle response was awesome, car was totally a hoot to drive, even though it was only running 6-7psi.
so if you already have the 3" exhaust, i'd look for an S5 manifold and hotside
i fixed it with a 20B.
but after the 3 rotor, i did a really similar 13B-T combo, except with an S5 turbo, and it was WAY better, in fact throttle response was awesome, car was totally a hoot to drive, even though it was only running 6-7psi.
so if you already have the 3" exhaust, i'd look for an S5 manifold and hotside
Trending Topics
#9
Since you're pegging the boost, I assumed you had already broken in the engine..... In which case it should be idling where every other properly assemble/tuned non-ported engine idles......750-850 rpm....or somewhere remotely close. If it hasn't been broken in then 1100 isn't unreasonable, a better alternative than stalling all the time at least.
Check the fsm procedure for setting idle, you can't when the rpm is at 1100, the ecu will adjust timing to offset your changes.
Check the fsm procedure for setting idle, you can't when the rpm is at 1100, the ecu will adjust timing to offset your changes.
Last edited by sharingan 19; 09-14-11 at 07:34 PM. Reason: engine...not motor.
#10
Senior Member
iTrader: (3)
Your clutch fluid.... check your clutch hose by the slave cylinder by the oil filter. my 87 tii is leaking clutch fluid there too. i just ordered a stainless steel clutch hose from
http://www.mazdatrix.com/f-hydral.htm
for $18.00 if its not leaking there check for fluid at the slave cyl or master cyl. the fluid is leaking somewhere getting air in the system making it hard to shift/ get into gears.
i would def. get the twinscroll back on. it makes your turbo spool up way faster. i disabled mine to compare and its faster with the twinscrool by far.
def. get bigger injectors and a computer asap you dont have enough fuel for your mods. last thing you want is a blown motor.
first off get a fan shroud and fix your clutch leak. then worry about fuel injectors.
congrats and welcome to the turbo club. post some pics.
http://www.mazdatrix.com/f-hydral.htm
for $18.00 if its not leaking there check for fluid at the slave cyl or master cyl. the fluid is leaking somewhere getting air in the system making it hard to shift/ get into gears.
i would def. get the twinscroll back on. it makes your turbo spool up way faster. i disabled mine to compare and its faster with the twinscrool by far.
def. get bigger injectors and a computer asap you dont have enough fuel for your mods. last thing you want is a blown motor.
first off get a fan shroud and fix your clutch leak. then worry about fuel injectors.
congrats and welcome to the turbo club. post some pics.
#16
3inch exhaust is almost to big for the stock turbo.
I have the same setup minus the port,2 1/2 exhaust, and an s5 turbo and I have NO turbo lag.
Also your aftermarket clutch is kicking your 20+year old clutch slave and master. Might as well replace both along with the rubber line. Fairly cheap fix.
Have you replaced your shifter bushings?
I have the same setup minus the port,2 1/2 exhaust, and an s5 turbo and I have NO turbo lag.
Also your aftermarket clutch is kicking your 20+year old clutch slave and master. Might as well replace both along with the rubber line. Fairly cheap fix.
Have you replaced your shifter bushings?
#17
emusa intercooler
http://[url=http://www.flickr.com/photos/brian_skotch/6885084791/]
[/url]
http://www.flickr.com/photos/brian_skotch/6885084791/ by http://www.flickr.com/people/brian_skotch/, on Flickr
http://[url=http://www.flickr.com/photos/brian_skotch/6885083613/]
[/url]
http://www.flickr.com/photos/brian_skotch/6885083613/ by http://www.flickr.com/people/brian_skotch/, on Flickr
http://[url=http://www.flickr.com/photos/brian_skotch/6885083039/]
[/url]
http://www.flickr.com/photos/brian_skotch/6885083039/ by http://www.flickr.com/people/brian_skotch/, on Flickr
http://[url=http://www.flickr.com/photos/brian_skotch/6885084291/]
[/url]
http://www.flickr.com/photos/brian_skotch/6885084291/ by http://www.flickr.com/people/brian_skotch/, on Flickr
![](https://farm8.staticflickr.com/7042/6885084791_5839b31aa1_b.jpg)
http://www.flickr.com/photos/brian_skotch/6885084791/ by http://www.flickr.com/people/brian_skotch/, on Flickr
http://[url=http://www.flickr.com/photos/brian_skotch/6885083613/]
![](https://farm8.staticflickr.com/7203/6885083613_e6b00c4f87_b.jpg)
http://www.flickr.com/photos/brian_skotch/6885083613/ by http://www.flickr.com/people/brian_skotch/, on Flickr
http://[url=http://www.flickr.com/photos/brian_skotch/6885083039/]
![](https://farm8.staticflickr.com/7207/6885083039_8ee3a6009e_b.jpg)
http://www.flickr.com/photos/brian_skotch/6885083039/ by http://www.flickr.com/people/brian_skotch/, on Flickr
http://[url=http://www.flickr.com/photos/brian_skotch/6885084291/]
![](https://farm8.staticflickr.com/7047/6885084291_9aa372e640_b.jpg)
http://www.flickr.com/photos/brian_skotch/6885084291/ by http://www.flickr.com/people/brian_skotch/, on Flickr
#18
It's an emusa core. Got it really cheap. Core looks solid but the piping was a pain in the *** on the drivers side. Passenger side fit really well. Make sure if you buy one of these kits, or any knock off kit you check the inside of the piping. Mine had a ton of little metal flakes left over from the cutting I assume. Cleaned that out ASAP. Pics of the gp front next.
#19
http://[url=http://www.flickr.com/photos/brian_skotch/6885102263/]
[/url]
http://www.flickr.com/photos/brian_skotch/6885102263/ by http://www.flickr.com/people/brian_skotch/, on Flickr
http://[url=http://www.flickr.com/photos/brian_skotch/6885102945/]
[/url]
http://www.flickr.com/photos/brian_skotch/6885102945/ by http://www.flickr.com/people/brian_skotch/, on Flickr
http://[url=http://www.flickr.com/photos/brian_skotch/6885085445/]
[/url]
http://www.flickr.com/photos/brian_skotch/6885085445/ by http://www.flickr.com/people/brian_skotch/, on Flickr
And that's how she sits. She's gonna be a little bit lower on tokico blues and tanabe springs that I have laying around. I wanna do coilovers but I'm gonna have to wait on funds. Oh and my fuel system is getting there too![Smilie](https://www.rx7club.com/images/smilies/smile.gif)
http://[url=http://www.flickr.com/photos/brian_skotch/6885086455/]
[/url]
http://www.flickr.com/photos/brian_skotch/6885086455/ by http://www.flickr.com/people/brian_skotch/, on Flickr
![](https://farm8.staticflickr.com/7186/6885102263_9a881349f0_b.jpg)
http://www.flickr.com/photos/brian_skotch/6885102263/ by http://www.flickr.com/people/brian_skotch/, on Flickr
http://[url=http://www.flickr.com/photos/brian_skotch/6885102945/]
![](https://farm8.staticflickr.com/7185/6885102945_a0be884bac_b.jpg)
http://www.flickr.com/photos/brian_skotch/6885102945/ by http://www.flickr.com/people/brian_skotch/, on Flickr
http://[url=http://www.flickr.com/photos/brian_skotch/6885085445/]
![](https://farm8.staticflickr.com/7177/6885085445_6cf5439eae_b.jpg)
http://www.flickr.com/photos/brian_skotch/6885085445/ by http://www.flickr.com/people/brian_skotch/, on Flickr
And that's how she sits. She's gonna be a little bit lower on tokico blues and tanabe springs that I have laying around. I wanna do coilovers but I'm gonna have to wait on funds. Oh and my fuel system is getting there too
![Smilie](https://www.rx7club.com/images/smilies/smile.gif)
http://[url=http://www.flickr.com/photos/brian_skotch/6885086455/]
![](https://farm8.staticflickr.com/7057/6885086455_5c96a9fb16_b.jpg)
http://www.flickr.com/photos/brian_skotch/6885086455/ by http://www.flickr.com/people/brian_skotch/, on Flickr
#21
Don't hate my V8
![](https://www.rx7club.com/images/misc/15_year_icon.png)
iTrader: (4)
Join Date: Mar 2006
Location: Cornfield, Indiana
Posts: 1,129
Likes: 0
Received 0 Likes
on
0 Posts
body kits are gross, just saying
disabling the "tsudo" twin scroll does hurt low response just becasue the manifold and turbine inlet has such a turbulent/crappy design resulting in a lot of negative work, S5 far in flow and response time (much less turbulence/no negative work) as they are true divided twin scroll units.
disabling the "tsudo" twin scroll does hurt low response just becasue the manifold and turbine inlet has such a turbulent/crappy design resulting in a lot of negative work, S5 far in flow and response time (much less turbulence/no negative work) as they are true divided twin scroll units.
#23
Retired Moderator, RIP
![](https://www.rx7club.com/images/misc/10_year_icon.png)
iTrader: (142)
Join Date: Sep 2005
Location: Smiths Falls.(near Ottawa!.Mapquest IT!)
Posts: 25,581
Likes: 0
Received 131 Likes
on
114 Posts
A fan setup without a shroud is like..what is the word?....ya..Useless!..decoration..