Daihatsu Sirion

[monacular]

if u want for more power gain just change the cat-back exhaust and the intake.

good luck mate

[seveer unaek]

if u want for more power gain just change the cat-back exhaust and the intake.

good luck mate

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I will be doing quite soon! Just got to get my funds together!!

[yvvan]

Guys its the same engine.If you read the specs of the 2 engines you will see that :bookworm: .i've asked a daihatsu mechanic and he told me that they use a different crankshaft and a new program.So the compression is 11:1 instead for us having 10:1.if you consider doing that you shouldn't forget that we have chain and that it will need to be changed.the price for the crankshaft is just 37€.

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If the specs are the same, and I assume you are talking bore x stroke (although they *are* slightly different, unfortunately not the good way for your reasoning), then put in another cranckshaft which to raise your compression will have to drive the piston higher in the cylinder in the up strokes, and hence goes lower in the down strokes, then tell me what will happen to the stroke?

Yup, you guessed right!

I think you can draw your own conclusions then.

Not to mention the block castings, which I have seen for all three engine types.

yvan you still havnt solved the question as to how the car does 0-60 in 7.9 seconds its N/A isnt it?

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Intake runners lenght, throttlebody size, headers, injectors, piston top design, head design, ... .

Engine designs can vary in so many ways, depends on what the designer and manufacturer has in mind for the engine.

Cheers, Yves.

[knightrider]

yves fancy buliding me a design for a custom turbo kit for the yaris TS?

[yvvan]

yves fancy buliding me a design for a custom turbo kit for the yaris TS?

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Soz mate, but I'm not into charged engines. My lurve lies in single cam, carbed ones. After all, more than two valves per cylinder is nothing but excess weight ;) .

Cheers, Yves.

[Ryan1985]

Soz mate, but I'm not into charged engines. My lurve lies in single cam, carbed ones. After all, more than two valves per cylinder is nothing but excess weight ;) .

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If I had any idea what you were talking about I would agree!

How do you know everything about engines btw Yves? You been around engines all your life?

[yvvan]

How do you know everything about engines btw Yves?

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I don't know everything, not even close.

You been around engines all your life?

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I even dream about them! And Green Yarii! Other things too, but let's keep this a family friendly forum.

Cheers, Yves.

[Ryan1985]

How do you know everything about engines btw Yves?

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I don't know everything, not even close.

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But you know what I mean!!! I'd love to know as much as yourself!

[Blue84]

I even dream about them! And Green Yarii! Other things too, but let's keep this a family friendly forum.

Cheers, Yves.

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You should keep those kind of dreams quiet!!!! :D :D

[monacular]

the difference between the 2 engines its just the cranckshaft.ours is 0,7mm and daihatsu sirion is 0,5mm.I'm talking about the new 1,3 engine yaris and not the jap spec.I've seen a yaris with it and it works just fine.I'm about to do it next month.

I've allready told u that i have asked a daihatsu engineer.the only difference is that and the wiring.that's why u cant put the sirion ecu into a yaris.

[Gareth B]

Friend of mine has been rallying the Sirion in the BTRDA Championships and was coming in 2nd and 3rd in his class (group N1 if anyone interested). He was regularly beating VW polo 1400's plus other 1400's in the class but could never come near to the (of all cars) MG rover that has one nearly every stage in it's class!

Unfortunately I don't think he is going to race next year but hopefully going up to 1600's in 2006.

He rated it very highly and was very suprised when he tested it for Daihatsu.

[yvvan]

the difference between the 2 engines its just the cranckshaft.ours is 0,7mm and daihatsu sirion is 0,5mm.I'm talking about the new 1,3 engine yaris and not the jap spec.I've seen a yaris with it and it works just fine.I'm about to do it next month.

I've allready told u that i have asked a daihatsu engineer.the only difference is that and the wiring.that's why u cant put the sirion ecu into a yaris.

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So it's just a different crankshaft , but the same engine? That would mean, if I'm not mistaken, that the centerlines of the crankshaft and the driven camshaft remain the same, right? Then please explain me the difference in chain lenght if there is no positional difference regarding cranck-cam.

And what does a 0.5mm or 0.7mm crank mean?

Yves.

[gerard]

wouldn't it be easier to do an engine swop... from a wreckers ie

[monacular]

the difference between the 2 engines its just the cranckshaft.ours is 0,7mm and daihatsu sirion is 0,5mm.I'm talking about the new 1,3 engine yaris and not the jap spec.I've seen a yaris with it and it works just fine.I'm about to do it next month.

I've allready told u that i have asked a daihatsu engineer.the only difference is that and the wiring.that's why u cant put the sirion ecu into a yaris.

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So it's just a different crankshaft , but the same engine? That would mean, if I'm not mistaken, that the centerlines of the crankshaft and the driven camshaft remain the same, right? Then please explain me the difference in chain lenght if there is no positional difference regarding cranck-cam.

And what does a 0.5mm or 0.7mm crank mean?

Yves.

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the difference is between the head that will be now 0.2 mm lower.when u change the cranckshaft u change the distance of the pistons from the head.that's because the new cranckshaft has a lower hight than the 1 u are using.i dont know how to explain it to u with clear engineering terms but i hope u'll get it.if u dont change the chain it will fleep over.

[yvvan]

the difference is between the head that will be now 0.2 mm lower.when u change the cranckshaft u change the distance of the pistons from the head.that's because the new cranckshaft has a lower hight than the 1 u are using.i dont know how to explain it to u with clear engineering terms but i hope u'll get it.if u dont change the chain it will fleep over.

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To increase compression ratio, wouldn't it have been easier to just change to higher pistons rather than "lowering" the head with 0.2 mm, then offsetting this by using an 0.2 mm lower crank (I guess that's what your 0.5 vs 0.7 cranck means, although I still don't have a clue as to what exactly you're on about) which would equate to (as good as) no difference in compression ratio? To reach the difference in compression ratio from 10:1 to 11:1 higher pistons would have had to be used anyway. Also using such a cranckshaft would result in a 0.4 mm decreased stroke, in which case you should tell either Toyota or Daihatsu to change their spec sheets because they say the K3-VE has a stroke of 79.70 mm and the 2SZ-FE has a stroke of 79.60 mm and that's a difference of only 0.10 mm. They even have it the other way around. While you're at it also tell them to change the specs on the displacement of their engines as obviously they're useless at using the good old "Vs=((pi.d^2).s/4).(number of cylinders)" formula.

So, if I understand correctly, the 2SZ-FE's chain will be a whopping 0.4 mm longer than the K3-VE's? But seeing the distribution chain has a tolerance of 19.5 mm, then why would it have to be changed for only a 0.4mm difference?

Your comments?

Yves.

Edit: spaling

[monacular]

it's easier if u choose to use different pistons but u will go to more higher compressions like 12:1.all i'm saying here is that it can be done and thats what daihatsu told me.i've also seen it work.

[Brolly]

so far after 2 yrs had someone trid to swap the yaris crankshaft with the Sirion's ?? and a new program.. is this a different ecu or ust the same ecu with diffenet paramiters ??

any results ?????

[sphinktar1988]

i was lost after the first post n i now have spent 10 mins reading all of them in hope that i will understand :s oh dear

[gar]

You talking about the cam chain?

and seveer it doesn't have to cost 2k. so far ive spent £155 and i dont intend to spend more than 300.

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But you got lucky didn't you? Plus, you seem to be mechanically minded and able... im minded, but not able in the slightest, so i'd be looking at lot to get one bought, fitted and working!

The 1000€ seems fairly reasonable (about £600) but it sounds like a lot of work!

u need to exhaust cam, fit free-er floeing airfilter and sports back box. then get upgrade to ecu. faster xlr8 and faster top end. no real loss of fuel either. :

[Brolly]

You talking about the cam chain?

and seveer it doesn't have to cost 2k. so far ive spent £155 and i dont intend to spend more than 300.

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But you got lucky didn't you? Plus, you seem to be mechanically minded and able... im minded, but not able in the slightest, so i'd be looking at lot to get one bought, fitted and working!

The 1000€ seems fairly reasonable (about £600) but it sounds like a lot of work!

u need to exhaust cam, fit free-er floeing airfilter and sports back box. then get upgrade to ecu. faster xlr8 and faster top end. no real loss of fuel either. :

what you intened by upgrage ecu ?? change the ecu, remap the ecu or install a pigpy back like E-Manage ????

[Brolly]

can some one tell me what are the realy bennefits of using an e manage ecu piggy back ?? and how you set the paramiter to it??? via a serial port from laptop or he got its interface ???

[Brolly]

any one had trid to swap the yaris 0,7mm cam with the daihatsu sirion is 0,5mm cam ?

[tehl337]

it would appear, no one gives a rats *****.sorry. lol

[Brolly]

ye that what it looks like :@ uffff

[Piranha]

I love my 2004 manual Daihatsu Sirion Sport, thinking of getting her Chipped. It is fun to drive and dam quick.

Fraction slower than BMW.