top mount I was workin on..
well, I spent sunday night and the better half of my monday tackin together this manifold. basically I wanted to make a top mount that would retain a/c and place the turbo in more or less the same position as most top mounts. I came up with this. that do you guys think? I fitted it in my integra, and it fits...heh, I might redo the #2 runner so it sits a lil closer to the block, but we'll see. anyways, on to the pics.


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looks similar to what i emailed a couple of the fab guys on here about (think i emailed you aswell). I might just be dreaming but it would be nice if the runners came down straight and then curled up, in order to do this im guessing you would have to bring each runner right next to each other but might work out better in the end?
I dont recall getting one of your emails, but if I took that route, I would think that 2 out of the 4 runners would be a lot longer than the others. and like Pikachu said, the d/p might be a bit tricky to make. Like I said, I test fitted it in my integra, and it clears condensor might have to be moved up a bit, but nothing major, and of course the fans have to be run in the front. but I dunno, Im not too happy with it, so I might take it apart and try a new design
Awesome work, but honestly does that thing have any purpose besides looking good?
I mean the thing probably weighs 30lbs like someone said, and all the bends, and the distance for the exhaust gas to travel... I can see this maybe working on high boost set ups but for anything 15lbs and under is there any benifits?
Im not trying to ***** just curious. Good work non the less, it "looks" good.
I mean the thing probably weighs 30lbs like someone said, and all the bends, and the distance for the exhaust gas to travel... I can see this maybe working on high boost set ups but for anything 15lbs and under is there any benifits?
Im not trying to ***** just curious. Good work non the less, it "looks" good.
The length helps prevent gas recirculation in high rpm's / high boost. Puts the restriction of the turbo further away from the head to help exhaust from backing back into the chambers after being burnt. The more exhaust out the more fresh combustibles aloud back in.
So basically helps keep the EGT down by not recirculating the gases?
And also does the top mounts lag alot more?
Also with the Exhaust housing right next to the piping , does that effect anything?
Again im not trying to bash it, just trying to understand the theory behind it.
And also does the top mounts lag alot more?
Also with the Exhaust housing right next to the piping , does that effect anything?
Again im not trying to bash it, just trying to understand the theory behind it.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMs1eeper »</TD></TR><TR><TD CLASS="quote">The length helps prevent gas recirculation in high rpm's / high boost. Puts the restriction of the turbo further away from the head to help exhaust from backing back into the chambers after being burnt. The more exhaust out the more fresh combustibles aloud back in. </TD></TR></TABLE>hey nice...i learned someting today
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by radio1global »</TD></TR><TR><TD CLASS="quote">So basically helps keep the EGT down by not recirculating the gases?
And also does the top mounts lag alot more?
Also with the Exhaust housing right next to the piping , does that effect anything?
Again im not trying to bash it, just trying to understand the theory behind it.</TD></TR></TABLE>
That could be a direct result but you get more benifits then just that. Better knock resistance is one good outcome. The three factors that result in engine knock are: 1) knock resistance characteristics (knock limit) of the engine, 2) ambient air conditions, and 3) octane rating of the fuel being used. Since every engine is vastly different when it comes to knock resistance, there is no single answer to "how much." Design features such as combustion chamber shape, spark plug location, bore size and compression ratio affects the knock characteristics of an engine. In addition, engine calibration of fuel and spark plays an enormous role in dictating knock behavior. So being more knock resistant is only 1 of many good traits these manifolds can offer.
EDIT some more good highlights
-Maximize the radius of the bends that make up the exhaust primaries to maintain pulse energy
-Make the exhaust primaries equal length to balance exhaust reversion across all cylinders
-Avoid rapid area changes to maintain pulse energy to the turbine
-At the collector, introduce flow from all runners at a narrow angle to minimize "turning" of the flow in the collector
-For better boost response, minimize the exhaust volume between the exhaust ports and the turbine inlet but for best power, tuned primary lengths can be used w/ a topmount.
And also does the top mounts lag alot more?
Also with the Exhaust housing right next to the piping , does that effect anything?
Again im not trying to bash it, just trying to understand the theory behind it.</TD></TR></TABLE>
That could be a direct result but you get more benifits then just that. Better knock resistance is one good outcome. The three factors that result in engine knock are: 1) knock resistance characteristics (knock limit) of the engine, 2) ambient air conditions, and 3) octane rating of the fuel being used. Since every engine is vastly different when it comes to knock resistance, there is no single answer to "how much." Design features such as combustion chamber shape, spark plug location, bore size and compression ratio affects the knock characteristics of an engine. In addition, engine calibration of fuel and spark plays an enormous role in dictating knock behavior. So being more knock resistant is only 1 of many good traits these manifolds can offer.
EDIT some more good highlights
-Maximize the radius of the bends that make up the exhaust primaries to maintain pulse energy
-Make the exhaust primaries equal length to balance exhaust reversion across all cylinders
-Avoid rapid area changes to maintain pulse energy to the turbine
-At the collector, introduce flow from all runners at a narrow angle to minimize "turning" of the flow in the collector
-For better boost response, minimize the exhaust volume between the exhaust ports and the turbine inlet but for best power, tuned primary lengths can be used w/ a topmount.
Ah another fellow Thermal Arc'er! It's a great machine IMO. I personally like it however, it's so far out, wouldn't it be cutting into the frame and such? If it was me, I'd do the same design with the turbo closer to the block.



, Herm it looks good, let me know how that torch works out.



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