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Underbody braces, turbos and more!

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PostPosted: Sun Nov 02, 2008 10:34 am 
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Joined: Sun Nov 02, 2008 9:54 am
Posts: 82
Location: Heart of the Trent, Ontario
Hi All,
I'm new to the board. For the longest time I was sacrificing fuel economy for power..but no more! Behold the '91 Firefly convertible LE(same as Metro) I picked up for the wife's commute for a mere 600 dollars! 170k kms & never winter driven.

This will be her "limited edition" Firefly XFI , I want to do the XFI cam swap that MetroMPG did, advance the timing by doing the sprocket mod, and switch to a different transmission with lower final drive. Not going to mess with the computers or remove any piston rings. I'm thinking a transmission off of a per 95 Metro/swift/firefly with 1.3L SOHC motor would do this trick with its 3.52 final drive? I think these convertible's have a much higher final drive..so its gotta go! Any idea where I could source a transmission or XFI Cam? So far..I've checked out car-part.com and sent a few emails to DeltaCam and 3 Tech who both have cams in stock. Ideally I'd like an OEM cam..

So far, I've got a fresh timing belt, wires, dist cap, rotor button, accessory belt to put on it once I get that XFI Cam. I've also just put a new set of nordic winter 13" tires, they're 185 tall so the speedo reads 100kph when she's actually going 110! I know they aren't low rolling resistance, but she drives a pretty sketchy part of the 401 hwy everyday, averaging 200kms/day out of a 5 day week back and for to university. On top of that, she has shifts at the hospital most times on weekends so she's putting 1000-1200kms on the car/week...so..economy is a priority right now....

So I figure, with the taller tires, Cam swap, advanced timing and much lower final drive tranny..she should be getting some much improved Mpg!? Looking forward to your suggestions



Ken


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-Save the Trees, Eat a Beaver!-

91' Firefly Turbo Convertible -> '90 G10T Swap, +6 Timing Sprocket, Stock Turbo, intercooler & 198/330 Cam, NGK V-power's, 7mm wires, Boost Gauge, Manual Boost Controller set to 9psi, Mobil 1 & GM Synchromesh, Short Shifter, K&N + removed resonator, Gutted Pre-cat, 2" Exhaust, High Flow Cat & Muffler, Front sway bar, Front underbody Brace, 185/65R14's on Steelies..
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PostPosted: Sun Nov 02, 2008 3:53 pm 
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Joined: Fri Nov 09, 2007 5:46 pm
Posts: 1099
Location: Abbotsford, BC
is nice !! :razz:

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1995 Firefly 1.3 SOHC 8VALVE MANUAL
2000 Firefly 1.3 SOHC 16VALVE AUTO. Goals: full restoration, achieve stock MPG and HP or higher, finished look should be 'stealthy' and unassuming. Engine will need to be rebuilt later on to restore compression levels.


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PostPosted: Tue Nov 04, 2008 7:27 am 
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Joined: Tue Mar 16, 2004 6:23 am
Posts: 1745
Location: Washington, DC
With the taller tires on 13" wheels you're already near XFI gearing. Changing from 4.39 to 3.52 would be a HUGE difference. Try starting off in second gear for a while to see if it would be a good idea, I think it would be too much. Base models were 4.10 and XFI's 3.79 (with the much smaller 12" wheels) if you want something less drastic.

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10 Suzuki Kizashi


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