Supercharged Tercel

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Chard
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Posts: 11
Joined: Sun May 01, 2016 11:24 pm
My tercel:: 84' tercel sr5 4wd supercharged, 87' Tercel4wd 4age RTR Rallycross
Location: Kansas
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Supercharged Tercel

Post by Chard » Mon Oct 07, 2019 7:58 pm

Hi everyone! I have been lurking the forum for a while but figured it was time to join the conversation and show off my fleet. This is one of my tercels. 1985 SR5. It has an amr500 with a suck-through setup with a weber 32/36. I tried to keep all accessories but eventually pulled the AC to add an oil cooler in that area. It wasnt working and pretty far down my list of projects. In retrospect I would have done things differently if i knew i were going to lose the AC anyway. But maybe I can make it all work together someday. I had to fabricate a bracket, tensioner, manifolds, use a UTV radiator, and relocate the PS reservoir.

It's making about 5psi max, and has lots more torque down low. Feels like a totally different car. And boy does it whine! The clutch was fading before the build and now it slips under high load boost pulling on the highway. I havent got it fully tuned or tidied up yet, its running rich. Been to busy with the 4age rally tercel. I've got a boost gauge and wideband. Gas mileage has surely gone down, but I'll check once it is tuned properly.

It has 14" steel wheels, snow tires, and cheap rubber spring boosters, and I think thats it. I hit a deer right after I got it, hense the blue hood. I'll post more about the build later. Probably when I pull the motor to replace the clutch. I'm thinking the Spec Stage 2. Hopefully its strong enough!
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-Chard

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Petros
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Posts: 11038
Joined: Sun Jan 28, 2007 6:31 pm
My tercel:: '84 Tercel4wd w/extensive mods
Location: Arlington WA USA

Re: Supercharged Tercel

Post by Petros » Mon Oct 07, 2019 11:22 pm

interesting set up, any idea how much power it might be producing?

I am not a fan of superchargers, nor turbo chargers either, for a daily driver. It greatly complicates the engine, usually increases maintenance, breakage, and reduces economy. I would rather get a higher performance naturally aspirated engine installed (but that usually adds more weight to the car).

that being said, they do have their place. what is it like to drive, does the engine behave differently?
'87 Tercel 4wd SR5 (current engine swap project)
'84 Tercel 4wd (daily driver, with on going mods)
'92 Mazda MPV 4wd (wife's daily driver)
'85 Tercel 4wd DLX auto(daughter's daily driver)
'01 Honda Civic (other daughter's daily driver)

Chard
Newbie
Posts: 11
Joined: Sun May 01, 2016 11:24 pm
My tercel:: 84' tercel sr5 4wd supercharged, 87' Tercel4wd 4age RTR Rallycross
Location: Kansas
Contact:

Re: Supercharged Tercel

Post by Chard » Tue Oct 08, 2019 7:26 am

Petros wrote:
Mon Oct 07, 2019 11:22 pm
interesting set up, any idea how much power it might be producing?

I am not a fan of superchargers, nor turbo chargers either, for a daily driver. It greatly complicates the engine, usually increases maintenance, breakage, and reduces economy. I would rather get a higher performance naturally aspirated engine installed (but that usually adds more weight to the car).

that being said, they do have their place. what is it like to drive, does the engine behave differently?
I'd say it's making about 50% more power. I don't know though, it's has been a while since I drove a stock 3ac now. I think some upgraded exhaust will help a lot.
It can get out of it's own way now, and feels much more comfortable on the road when going up hills and getting up to speed. And it has the wine of a roots supercharger! An engine swap would definitely be a more simple and reliable way to more power. If this was my daily I wouldn't have done it. It's more of a back roads cruiser, camper, and hobby car. I like to dive into things that I don't understand. I know a lot more about forced induction now. If this were sold in a kit, it would be a pretty easy way to power increase, as it's all bolt on after the fab work is done. Longevity, is yet to be determined, but 5psi isn't too crazy, I don't think.
-Chard

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NWMO
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Posts: 609
Joined: Wed May 20, 2015 1:08 pm

Re: Supercharged Tercel

Post by NWMO » Tue Oct 08, 2019 11:08 am

Chard,

What part of Kansas are in?? I'm in Maryville, MO and will be going south on October 18th-19th for some hopeful fun in Mark Twain National Forest on the service roads (nothing extreme). I've got about 11,000 miles on my 4ac rebuild and it's better. Went with a regrind cam and it cruises down the highway much nicer, still doesn't like long hills. I didn't get a ticket, but did get pulled over for doing 74 mph in a 65 about a month ago. I was not paying close enough attention which wasn't a problem before the rebuild, because the only away over 70 was foot to the floor :).

Wow, nice work on the turbo set-up and P/S relocate, etc. My "forever" project is just in the dream stage, but will take some fabrication. I'm hoping to find a diesel engine and get it installed while keeping the 4wd. Ideally it would have better grunt and get better mpg.

Chris

PS - I see your location from one of your earlier posts, I need to get down and see your projects some time (less than 3 hrs away)! That's neighbors for us Tercel owners not in the upper NW.
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T4WD augury?
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The Professor
Top Notch Member
Posts: 489
Joined: Wed May 12, 2010 6:38 pm
My tercel:: 1987 Tercel SR5 4WD wagon
Location: Western Washington
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Re: Supercharged Tercel

Post by The Professor » Wed Oct 09, 2019 8:15 am

Wow, this is a really cool project! I'd love to see some dyno numbers!
1975 Subaru SuperStar wagon
1984 Subaru Turbo-Traction wagon
1984 Subaru Turbo-Traction hardtop
1987 Subaru RX 3-door
1987.5 Subaru RX 3-door
1987 Subaru RX Type-RA 3-door
1987 Toyota Tercel SR5 wagon
1999 Subaru Forester S
2002 Subaru WRX sedan

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