Engine Conversion in progress

So I've gotten frustrated with how slow the original engine was not to mention how expensive parts were for it in my country.... that I've decided to change the engine. I'm putting in a GA1500 engine in it.... So far we've gotten the engine mounted.... just for the electrical and the exhaust systems to be done now... no major modifications were needed to be made save and except the brackets for the mounts on this engine were fabricated of course. so except for a SOHC 1.5 8V I now have a DOHC 1.5 16V... can't wait to test this puppy out... Oh yeah one more thing... I also had to re-outfit the trans-axle as well. I'll post pictures when it's done if you'all are interested.... so reply and then I'll post once its done.

Never thought I would say this but it makes me grateful for my 1.6 16V. I didnt think cars got any slower.

Lmfao

how much power gains could you get with dual cams opposed to a single cam. i know that having 2 sets of cams increases airflow in the cylinder.

That is not how that works at all.

i ment to say, having 2 cams increases the valve count in the cylinder to 4, which allows more air to go in and out of the engine

Just because there are more valve, does not mean there will be more air. Port shape and size means more than number of valves.

generally the size of the two valves instead of one increase the flow into the cylinder by 20-30%

but that is just the valve opening, and at the same height and duration. When you factor in the ports, cams etc. there is more to power than just extra valves.

having said that, usually (in a vw at least) the 2.0 8v to a 2.0 16v is about a 30 hp increase.

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Originally Posted by petrified.rabbit

generally the size of the two valves instead of one increase the flow into the cylinder by 20-30%

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You cant make that kind of generalization you know EVERY instance where you can go from 1 to 2 valves. Just because you increase the number of valves, does NOT mean that the cylinder will be getting more air. That is like saying 2 turbos will ALWAYS provide more air than 1.

I am not saying that in this specific instance it will not be that way. I am just saying that you cannot make that generalization unless you have flow tests proving it.

did you not read this part?

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Originally Posted by petrified.rabbit

but that is just the valve opening, and at the same height and duration. When you factor in the ports, cams etc. there is more to power than just extra valves.

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two engines from the same manufacturer ( i used vw, ABF and ABA engine codes):
if you take a single intake valve from a 2 v per cylinder engine, and and measure it.
then take the two intake valves from a 4 v per cylinder engine with the same bore and stroke, and measure those.

the surface area of the two valves will be greater than the surface area of the single valve by 20-30% which means (i am not looking for the equation) that the flow from the opening(s) will be greater if the lift and duration are exactly the same.

simply, if you have a 6 inch cylinder bore, then up to half the diameter (or radius) could be the diameter for the intake valve. so you could have a 3" valve. But due to the double cross sections on the same bore you would only be able to fit 2 2" intake valves.

BUT 2 x 2(pie)(squared) > 1 x 3 (pie)(squared) <- not accurate depiction of formula

with 1" of lift for 180(degrees) the cylinder can draw in more air through the opening.. the porting of the head and all that stuff is not factored into that.


2 x 2(pie)(squared) x 1" /180(degrees) > 1 x 3 (pie)(squared) x 1" /180(degrees)<- not accurate depiction of formula


2 x 2(pie)(squared) > 1 x 3 (pie)(squared)

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Originally Posted by aveodude

You cant make that kind of generalization you know EVERY instance where you can go from 1 to 2 valves.

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In the VW case, it does increase flow. In EVERY case it does not.
It is like me making the generalization that every V6 makes more power than every 4 cylinder.

let him swap his engine in peace.... :lol:

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Originally Posted by aveodude

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Originally Posted by aveodude

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It is like me making the generalization that every V6 makes more power than every 4 cylinder.

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name one v6 that doesnt

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Originally Posted by loose

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Originally Posted by aveodude

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Originally Posted by aveodude

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It is like me making the generalization that every V6 makes more power than every 4 cylinder.

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name one v6 that doesnt

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Like a turbo'd B16 making 400hp compared to a GM 3400 V6 making 160hp. I know it's one extreme to the other but still.

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Originally Posted by loose

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Originally Posted by aveodude

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Originally Posted by aveodude

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It is like me making the generalization that every V6 makes more power than every 4 cylinder.

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name one v6 that doesnt

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1987 camaro V6 135hp
1992-1998 Mazda MX-3 V6 130hp
vs.
1999 Suzuki Hayabusa I4 156 hp
1992-1995 Porsche 968 I4 236 hp
1956 Ferrari 860 Monza I4 280 hp
1955 Ferrari 857s Monza I4 280 hp
1954 Ferrari 750 Monza I4 250 hp
1986-1992 BMW M3 I4 215 hp
1986-1992 BMW M3 Evo III I4 238


None of the I4 engines are F/I. I can keep going if you wish.

you taking this out of line though, i clearly stated twice, that the engine needed to have the same bore and stroke, and be from the same manufacturer.

show me STOCK engines, where the same manufacturer went from an 8v to a 16v and didnt increase power. Hell i wasn't even saying 4 to a 6. or anything like that, i was saying the valve area increase allows more air to be drawn into the cylinder a PROVEN fact of engine design. Not a generalization.

when you cross platforms and include aftermarket parts, of course there line cross.

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Originally Posted by petrified.rabbit

you taking this out of line though, i clearly stated twice, that the engine needed to have the same bore and stroke, and be from the same manufacturer.

show me STOCK engines, where the same manufacturer went from an 8v to a 16v and didnt increase power. Hell i wasn't even saying 4 to a 6. or anything like that, i was saying the valve area increase allows more air to be drawn into the cylinder a PROVEN fact of engine design. Not a generalization.

when you cross platforms and include aftermarket parts, of course there line cross.

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Like I said before, I dont know ALL instances where you can take an engine from 8V to 16V. Therefore, I cannot say that in EVERY case it will increase horsepower.

Here is a great example.
On a SRT4 head (or any head for that matter), if you take out too much while porting, it will ruin the flow of air and therefore LESS air gets into the cylinders. Even though the area is greater less air is getting in.
Going from a 8v to a 16v, who says that the 16v wont have a smaller/worse design on the intake ports disrupting the flow? The size of the valves plays a role in how much air the engine is getting but you also need to account for the port shape, port size, of the intake runner on the head which you seem to be leaving out of your equation.

All I was saying that without flow testing, you CANNOT say that a 16v head will flow better than the 8v head. It is just hearsay without proof.

Well I don't have numbers for you yet.... but I do know that I'm experiencing more power with the jap engine than the original stock engine..... Please note this vehicle is still a work in progress and I will post updated pictures at moderate intervals. so if interested to view the pics of my "reformed" car here they are.

I like your wheels and shark-fin antenna. Looks good man.

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Originally Posted by Hibrydsoul

Well I don't have numbers for you yet.... but I do know that I'm experiencing more power with the jap engine than the original stock engine..... Please note this vehicle is still a work in progress and I will post updated pictures at moderate intervals. so if interested to view the pics of my "reformed" car here they are.

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the car looks good
i really like those rims

You spray painted the heat shield while it was on the car?

You should defiently lose the type R badge, we are not hondas. :lol:

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Originally Posted by aveodude

You spray painted the heat shield while it was on the car?

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Thats just lazy LOL

I didn't spray paint the heat shield while it was on the engine. I actually spray painted the engine as well... but it only received one coat and the heat killed it. I'm actually going to be taking the engine out and spray paint the engine bay properly together with the engine. The racing "r" was the only thing sensible enough to put in place of the antenna. If there's an LED chevy emblem that lights up, I'm all ears, otherwise the "r" stays ;)

You should just do the mesh grille and move your chevy bowtie to the roof.

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Originally Posted by Wolfman AK907

You should defiently lose the type R badge, we are not hondas. :lol:

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you are a god to me wolfman :lol: :lol: :lol:

good job on the swap, it runs so its a success!

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Originally Posted by Wolfman AK907

You should just do the mesh grille and move your chevy bowtie to the roof.

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Yes, I'm quoting my own post, but I think that gold paint on the back of the bowtie can be removed with some paint thinner...it might be cool if you stripped that gold crap out so it's completely clear and tint some clear to smoke out the emblem just enough to make it look black and then light that bitch up with leds!!! :twisted: It might look kinda tight.

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Originally Posted by thehunterooo

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Originally Posted by Wolfman AK907

You should defiently lose the type R badge, we are not hondas. :lol:

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you are a god to me wolfman :lol: :lol: :lol:

good job on the swap, it runs so its a success!

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I know right, it makes you not want to ever buy a real type R cuz people would think your another gay poser lol.

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Wolfman AK907 wrote:
You should just do the mesh grille and move your chevy bowtie to the roof.

Yes, I'm quoting my own post, but I think that gold paint on the back of the bowtie can be removed with some paint thinner...it might be cool if you stripped that gold crap out so it's completely clear and tint some clear to smoke out the emblem just enough to make it look black and then light that bitch up with leds!!! It might look kinda tight.

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I'll think about it.

Cool! Nice project.

I recently bought an 04 Aveo with a blown engine (T-belt broke). I was thinking of swapping in a Suzuki 1.6L with a dual cam head from the 1.3L. The only reason being because I've got a ton of Suzuki engines and parts from my 1990 Swift GT rally car.

But I went with rebuilding the original Daewoo engine instead.