Discussion
Ok, I know this won't be as cost affective as a engine swap and will be a little pointless in doing but think of this as a technical exercise for myself.
I want to tune a NA 16v 4AGE engine. I hope to get the output to around 170-180bhp but I have no REAL knowledge of engines and specifics such as measurments.
The way I was hoping to get to this power was going to be the following.
uprated cams, springs and valves (unsure what exact specs will be useable for day to day driving)
more efficient exhause manifaold (unsure where to get this but I assume there is one that will allow gas to flow a little better)
Forged crankshaft, hight compression pistons and lighter forged conrods.
ITBS
lightened flywheel
hight output fuel pump
Ok this is where I'm asking for help and advice with the technical side, I have no idea about the engines details.
I get the basics of how they all fit and work together but when I look for example a crankshaft it says
"Stroke: 77mm
Max HP : 1800HP"
Is that stroke size right for a standard MR2 4AGE? because it can handle a greater power can I make the engine rev higher?
As for pistons, what sizes do I need? How do new pistons increase pressure? If I have higher lift Cams and taller pistons will my engine eat itself?
I'm sorry if this sounds like a stupid post but this is going to be something I plan to build over the next few years for putting in the MR2 when it's rebuilt. The car would be 90% road use so I would like to keep it with a decent amount if not higher low down torque and higher revving higher powered top end.
I'm looking to do all the work myself just to see if I can do, please give me any advice possible.
Thanks
Liam
I want to tune a NA 16v 4AGE engine. I hope to get the output to around 170-180bhp but I have no REAL knowledge of engines and specifics such as measurments.
The way I was hoping to get to this power was going to be the following.
uprated cams, springs and valves (unsure what exact specs will be useable for day to day driving)
more efficient exhause manifaold (unsure where to get this but I assume there is one that will allow gas to flow a little better)
Forged crankshaft, hight compression pistons and lighter forged conrods.
ITBS
lightened flywheel
hight output fuel pump
Ok this is where I'm asking for help and advice with the technical side, I have no idea about the engines details.
I get the basics of how they all fit and work together but when I look for example a crankshaft it says
"Stroke: 77mm
Max HP : 1800HP"
Is that stroke size right for a standard MR2 4AGE? because it can handle a greater power can I make the engine rev higher?
As for pistons, what sizes do I need? How do new pistons increase pressure? If I have higher lift Cams and taller pistons will my engine eat itself?
I'm sorry if this sounds like a stupid post but this is going to be something I plan to build over the next few years for putting in the MR2 when it's rebuilt. The car would be 90% road use so I would like to keep it with a decent amount if not higher low down torque and higher revving higher powered top end.
I'm looking to do all the work myself just to see if I can do, please give me any advice possible.
Thanks
Liam
There are 3 things in your list you do not need ---1 forged crank vastly expensive and unnec for projected use ---2 lighter conrods as above --3 stupidly expensive hi spec pistons --as above.Rebuild the engine with Toyota spec parts add a pair of fast road/stage 1 cams and you will have a reliable unit for your intended use . I would forget the light fly wheel too spend the money on a reputable rolling road set up ,others will prob not agree but thats their prob
Speak to Raw Engineering One thing you have neglected to mention is how to are going to handle the fuelling and ignition for your modified engine.
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