Carb'd 12A 1985 AE86 Coupe build in the Lonestar State - Page 2

dr.occa · 01-30-2012, 10:54 AM

I picked up an S13 throttle/accelerator cable on a single trip to the yard this weekend. It was considerably shorter than the Tercel cable I was originally running but longer and more closer to an ideal length than the original SR5 cable. I ended up having to fab up a new cable stay out my dwindling scrap aluminum. With all the aluminum dust I'm sponging up I'm well on my way to the Alzheimer Carnival. Here's the outcome of one of many misadventures to ultimate memory loss island:

Another piece I borrowed from the S13 chassis is the slightly larger bore BMC with built-in proportioner:

and

Yet another non-native puzzle piece is the thermostat water neck pulled from an 87 Ford Ranger. The one that originally came with this 12A was longer and had a coolant cap on it. If you look in the background my radiator already has a cap. I wanted one less point of pressure leak hence my "solution". Also the length and the angle at which the outlet was facing created more of a severe turn in the upper coolant hose. I was able to greatly reduce the radius and length of the hose with the new thermostat neck. I just had to bore out the mounting points equally to get them to line up. Really easy fix. Ok, too much yap: here.

I ran a new batch of coolant through her along with a bottle of alum-a-seal since I had some "suffocation" issues with the last attempt. Idled the car for about 30 minutes at 7pm. Though the car was just idling, the heat shield for the intake area is working fabulously so far. Idle is at 1400-1600. I'm sure my neighbors were thinking daggers though. What do you think: am I a turd neighbor?

A funny note: as I was recording me blipping the throttle the last "shove" took out one of my outdoor garage lights. Not only were my ears assaulted, my eyes had a little magic show too.

Exhaust wise: still just the Racing beat header and that's it.

dr.occa · 03-16-2012, 02:52 PM

Rebuilt the 48 IDA and it's looking better.

Picked up a McDaniel Control 1.5" 1/8"npt 0-15psi gauge.

Even though it isn't glycerin filled, I figured this would be better than a cheap-o Chinese one.

I've got a 2" McDaniel all steal gauge with glass face 0-10psi but it's too bulky to keep attached to the lines. It sticks out way too much with the snubber and 1/8" adapter.

12arotary · 03-16-2012, 04:21 PM

damn that engine bay is simple! looks great!

dr.occa · 03-23-2012, 04:38 PM

It lives!

2:35 to 2:40

5 seconds of proof.

http://player.vimeo.com/video/38908861

Prodigy · 03-23-2012, 05:56 PM

Great build do far, decent video too. Do you knows who's FD was at 2:04..?

Ps, I live how your car sounds.... I get visions of a giant pissed off bee hive when I hear it... Lol

J.

dr.occa · 03-25-2012, 11:30 PM

I barely saw that FD. Eagle eye you is!

Sorry, don't know whose that was.

speedjunkie · 03-26-2012, 05:43 PM

^Someone with a V8 swap.

dr.occa · 04-03-2012, 11:36 AM

Added these 2" spacers to the carbie setup:

So it bumped the carb up and should stand to improve the low end response a little bit.

Here's what it looks like:

Also, removed the oil metering system and blocked it off:

I'll be running pre-mix.

RX-7FD3S · 04-13-2012, 08:29 AM

cool car, is the 12a stock? if so you should tear it down and port the shit out of it, then that little levin would fly

Rich@SR · 04-13-2012, 10:38 AM

Love this build!!! Keep em' coming.

dr.occa · 04-13-2012, 03:18 PM

Quote:

Originally Posted by RX-7FD3S

cool car, is the 12a stock? if so you should tear it down and port the shit out of it, then that little levin would fly

According to the previous owner it's street ported.

Update for today:
It's no RB pre-silencer BUT it is a 4" OD resonator that's about $200 more affordable for me and another step closer to finishing up the exhaust and being street "legal".

dr.occa · 05-04-2012, 09:12 AM

Past due update:

Installed the NST steering rack adapter/spacer last Friday on my off day (4/27/2012)

Here's a side by side comparison of the steering angle difference.

Passenger Side Before

Passenger Side After

Driver Side Before

Driver Side After

(*note: this is a power steering rack w/o the lines and pump, etc...)

dr.occa · 05-18-2012, 10:23 PM

OMP adapter kit installed. Yay!

Lines to the intake manifold via 90 degree 1/8" barb to 1/8" npt fittings.

The clear lines are a 4mm ID/6mm OD, crack-resistant Teflon hose. The hose is a very snug fit on the 12A OMP nipples and 1/8 barbs fittings. They'll hold up well against the pre-mix solution. The pre-mix reservoir bracket is next on the list and then a longer linkage to hook the OMP up to the throttle lever of the IDA.

dr.occa · 08-15-2012, 07:19 AM

Got the replacement 12A (stock port) in, hooked up, fueled and ignited. Took her for a spin around the neighborhood at 9PM last night. I know my entire subdivision is making plans to get the HOA and local law enforcement to get it taken away now. It's LOUD!

Escaped from the neighborhood "watch" and made a bee-line for the gas & sip down the feeder, then U-d around once then twice to head back into the subdivision. Looking forward to jetting around town in it for the next trust-worthy test.

Could stand to step down a couple of inches in the rear and an inch in front.

dr.occa · 08-15-2012, 09:11 PM

Finally installed the push start button:

It lives once again and more reliably (cross fingers):

01-30-2012, 10:54 AM	#1
dr.occa Rotary Fan in Training Join Date: Mar 2011 Posts: 73 Rep Power: 15	I picked up an S13 throttle/accelerator cable on a single trip to the yard this weekend. It was considerably shorter than the Tercel cable I was originally running but longer and more closer to an ideal length than the original SR5 cable. I ended up having to fab up a new cable stay out my dwindling scrap aluminum. With all the aluminum dust I'm sponging up I'm well on my way to the Alzheimer Carnival. Here's the outcome of one of many misadventures to ultimate memory loss island: Another piece I borrowed from the S13 chassis is the slightly larger bore BMC with built-in proportioner: and Yet another non-native puzzle piece is the thermostat water neck pulled from an 87 Ford Ranger. The one that originally came with this 12A was longer and had a coolant cap on it. If you look in the background my radiator already has a cap. I wanted one less point of pressure leak hence my "solution". Also the length and the angle at which the outlet was facing created more of a severe turn in the upper coolant hose. I was able to greatly reduce the radius and length of the hose with the new thermostat neck. I just had to bore out the mounting points equally to get them to line up. Really easy fix. Ok, too much yap: here. I ran a new batch of coolant through her along with a bottle of alum-a-seal since I had some "suffocation" issues with the last attempt. Idled the car for about 30 minutes at 7pm. Though the car was just idling, the heat shield for the intake area is working fabulously so far. Idle is at 1400-1600. I'm sure my neighbors were thinking daggers though. What do you think: am I a turd neighbor? A funny note: as I was recording me blipping the throttle the last "shove" took out one of my outdoor garage lights. Not only were my ears assaulted, my eyes had a little magic show too. Exhaust wise: still just the Racing beat header and that's it. Last edited by dr.occa; 01-30-2012 at 11:12 AM.

03-16-2012, 04:21 PM	#3
12arotary tumor-syphilis-itis-osis Join Date: Sep 2008 Posts: 191 Rep Power: 18	damn that engine bay is simple! looks great! __________________ 82 300d 82 Gsl 84 b2200 Diesel 88 gxl

03-25-2012, 11:30 PM	#6
dr.occa Rotary Fan in Training Join Date: Mar 2011 Posts: 73 Rep Power: 15	I barely saw that FD. Eagle eye you is! Sorry, don't know whose that was. Last edited by dr.occa; 07-12-2012 at 07:50 AM.

04-13-2012, 08:29 AM	#9
RX-7FD3S Bartemann Join Date: Aug 2010 Location: Norway Posts: 22 Rep Power: 0	cool car, is the 12a stock? if so you should tear it down and port the shit out of it, then that little levin would fly __________________ 1992 Rx-7 Type R1 1978 mazda RX-4 WAGON antrasite/black edition carbody+fiberglass=boat Driving a LHD RX7 is like jerking of with your left hand. It can be done, but it just doesnt feel right the RX7`s: FB:financial burden FC: financial Crisis FD: financial disaste my rides: http://www.mazda-ogn.org/phpBB3/view...p?f=17&t=20083 http://www.mazda-ogn.org/phpBB3/view...hp?f=17&t=5233

04-13-2012, 10:38 AM	#10
Rich@SR SR Race Engineering Join Date: Jan 2012 Location: Loxahatchee, FL Posts: 81 Rep Power: 14	Love this build!!! Keep em' coming. __________________ SR Race Engineering... Home of the "SR Nikki" My 1st Gen SCCA Rebuild Thread 1985 Rx-7 (SCCA Racecar) 2004 Lexus IS300 (Daily) 2004 VW GTI (Wife's Daily/Toy)

03-16-2012, 02:52 PM	#2
dr.occa Rotary Fan in Training Join Date: Mar 2011 Posts: 73 Rep Power: 15	Rebuilt the 48 IDA and it's looking better. Picked up a McDaniel Control 1.5" 1/8"npt 0-15psi gauge. Even though it isn't glycerin filled, I figured this would be better than a cheap-o Chinese one. I've got a 2" McDaniel all steal gauge with glass face 0-10psi but it's too bulky to keep attached to the lines. It sticks out way too much with the snubber and 1/8" adapter.

03-23-2012, 04:38 PM	#4
dr.occa Rotary Fan in Training Join Date: Mar 2011 Posts: 73 Rep Power: 15	It lives! 2:35 to 2:40 5 seconds of proof. http://player.vimeo.com/video/38908861

03-26-2012, 05:43 PM	#7
speedjunkie RCC Loves Me Not You Join Date: Mar 2008 Location: Colorado Springs, CO Posts: 2,089 Rep Power: 20	^Someone with a V8 swap.

04-03-2012, 11:36 AM	#8
dr.occa Rotary Fan in Training Join Date: Mar 2011 Posts: 73 Rep Power: 15	Added these 2" spacers to the carbie setup: So it bumped the carb up and should stand to improve the low end response a little bit. Here's what it looks like: Also, removed the oil metering system and blocked it off: I'll be running pre-mix.

05-04-2012, 09:12 AM	#12
dr.occa Rotary Fan in Training Join Date: Mar 2011 Posts: 73 Rep Power: 15	Past due update: Installed the NST steering rack adapter/spacer last Friday on my off day (4/27/2012) Here's a side by side comparison of the steering angle difference. Passenger Side Before Passenger Side After Driver Side Before Driver Side After (*note: this is a power steering rack w/o the lines and pump, etc...)

05-18-2012, 10:23 PM	#13
dr.occa Rotary Fan in Training Join Date: Mar 2011 Posts: 73 Rep Power: 15	OMP adapter kit installed. Yay! Lines to the intake manifold via 90 degree 1/8" barb to 1/8" npt fittings. The clear lines are a 4mm ID/6mm OD, crack-resistant Teflon hose. The hose is a very snug fit on the 12A OMP nipples and 1/8 barbs fittings. They'll hold up well against the pre-mix solution. The pre-mix reservoir bracket is next on the list and then a longer linkage to hook the OMP up to the throttle lever of the IDA.

08-15-2012, 07:19 AM	#14
dr.occa Rotary Fan in Training Join Date: Mar 2011 Posts: 73 Rep Power: 15	Got the replacement 12A (stock port) in, hooked up, fueled and ignited. Took her for a spin around the neighborhood at 9PM last night. I know my entire subdivision is making plans to get the HOA and local law enforcement to get it taken away now. It's LOUD! Escaped from the neighborhood "watch" and made a bee-line for the gas & sip down the feeder, then U-d around once then twice to head back into the subdivision. Looking forward to jetting around town in it for the next trust-worthy test. Could stand to step down a couple of inches in the rear and an inch in front.

08-15-2012, 09:11 PM	#15
dr.occa Rotary Fan in Training Join Date: Mar 2011 Posts: 73 Rep Power: 15	Finally installed the push start button: It lives once again and more reliably (cross fingers):