Avanza as donor car

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Avanza as donor car

Postby DieterD on Sat Nov 24, 2012 7:38 am

Has anyone looked into useing the Toyota Avanza as a donor, I know very little about these cars but see them in town a lot and its front engine, rear wheel drive, sounds like a nice package for a street 7.
DieterD
DieterD
 
Posts: 28
Joined: Thu May 25, 2006 3:48 pm
Location: Muizenburg, Cape Town

Re: Avanza as donor car

Postby DAVID HARRISON on Wed Dec 04, 2013 4:37 pm

Hello All

I was looking at an Avanza the other day and thought some research was needed:

As we all know the Avanza is RWD, so first place to start looking was at the back axle. The rear track is 1435 mm, I measured between the inside of the two tires - 1250mm, the widest point on the "book" chassis is 1067mm, therefore a gap of 91mm between the tires and the frame (might need wide arches) and the potential to use one of the Mc Sorley +4 chassis. The diff seems to be off- set about 60mm to the left, which would have to be accommodated in the tunnel design. I have been unable to establish the diff ratio, the only info I could find on the net was that in Thailand the 1.5 lt. manual has a 4.625:1 ratio and the auto 5.125:1 ratio ( I will try to get this from Toyota SA contacts).

Two Engines are offered in SA:

The K3-WT-i 1298cc develops 67 Kw at 6000 rpm and 117 Nm at 4400 rpm this is a 16 Valve DOHC motor with V V T it is a long stroke 72.0 X 79.7 motor.

The 3SZ-VE motor is 1495cc and develops 76Kw @ 6000 rpm and 136 Nm at 4400 rpm this is an even longer stroke motor 72.0 X 91.8.

I did rough measurements around the 1298 motor, it is quite tall, about 800 mm in total - presumably one could trim some of the cast ally sump - bowl at the back and save some about 80mm by not using the standard plenum, air cleaner. Including all ancillaries ( has a nice small alternator) about 500 mm wide ( inlet on RHS, exhaust LHS), about 500 mm long.

The gearbox is an all ally casing nice and small, about 500mm in length, clutch is cable, which leads to bulges in the bell housing which could maybe be reduced if a concentric clutch slave cylinder is used, ratios are:

1 3.769
2 2.045
3 1.376
4 1.0
5 0.838

The propshaft has universal joints at both ends and a centre bearing.

The front uprights look like the could be used, either by shortening the McPherson strut ( a la Marauder) or by fabricating a bolt on fitting to attach the upper ball joint.

The good thing about an avanza donor is that it is a current product with full spares availability, I don't know how easy it would be to find one with a wrecked body at a reasonable price, the saving grace being that it may be possible to find a low mileage unit which will not need any reconditioning to components.
\"GENTLY SIDEWAYS\"
DAVID HARRISON
 
Posts: 31
Joined: Mon Feb 07, 2005 1:18 pm
Location: EDENVALE

Re: Avanza as donor car

Postby DAVID HARRISON on Mon Oct 12, 2015 8:30 pm

In my previous post on the Avanza as a potential donor I was unable to find out what the diff ratio was. My company has now purchased an Avanza 1.5 SX for the fleet. I took it for a drive and registered 2700 rpm at 60 Kph on the GPS. Calculation as follows:

Tyre = 185/70/14
Diameter = 2(185X70/100) + (14 X 25) = 609mm
Circumference = 609 X 22/ 7 = 1914 mm
wheel revs per km = 1000M / 1914mm = 522.16turms
Differential Ratio = 2700 / 522.16 = 5.17
\"GENTLY SIDEWAYS\"
DAVID HARRISON
 
Posts: 31
Joined: Mon Feb 07, 2005 1:18 pm
Location: EDENVALE


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