VWDiesel.net The IDI, TDI, and mTDI source.
Engine Specific Info and Questions => IDI Engine => Topic started by: silvertdi on January 18, 2008, 07:24:32 pm
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What kind of power increase would I see with a Giles pump on a normally aspirated 1.6 motor? Is the change dramatic? Dyno numbers? Thanks.
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Giles did a pump for his N/A delivery rabbit a couple years ago. No other mods whatsoever. It gained 22hp at the wheels! That's the same as a 1.7L gasser rabbit, with more torque! I've always thought a Giles pumped, ported 1.9 head on a 1.6L with good exhaust would be a fun little ride. Stab on a TD Giles pump and reference the LDA to nitrous nozzle pressure for a kick in the backside.
He's sorted out several more mods to his pumps since that one. Most likely, it'd be better still.
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Giles did a pump for his N/A delivery rabbit a couple years ago. No other mods whatsoever. It gained 22hp at the wheels! That's the same as a 1.7L gasser rabbit, with more torque!
I think this is amazing, was that with or without the exhaust up-grade?
Can it really be a full 22WHP? People are paying a fortune to get gains like that in a gasser...
I suppose the price differences between a Td pump and normal N/A one would be quite different also...Nice gain gilles.....!damn
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bone stock, other than the pump.
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prices and EGT temps>?? Must have been some red hot piston lands
i bet that head gasket roasted off there in no time too
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This sounds good. I've been thinking of just going the Giles pump route, until the motor gets a little weaker (it only has 110,000 miles on it). Then going the full TD route. Could I put a TD IP pump on an N/A in hopes of putting a TD in the car later in the future?
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This sounds good. I've been thinking of just going the Giles pump route, until the motor gets a little weaker (it only has 110,000 miles on it). Then going the full TD route. Could I put a TD IP pump on an N/A in hopes of putting a TD in the car later in the future?
you could put a TD pump on, just make sure to have the boost line blocked off so no dirt/crap gets in there.
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prices and EGT temps>?? Must have been some red hot piston lands
i bet that head gasket roasted off there in no time too
Best bet, as always is to call Giles directly.
905-940-2266
or check his full contact details post here:
http://vwdiesel.net/phpBB/viewtopic.php?t=3100
a modded pump on an N/A engine is definitely not cause for an EGT or headgastket panic. The car ran flawlessly for two years before being sold, and continues to run flawlessly to this day. (I bet he wishes he kept it, now!)
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Thanks guys.
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yeah i also kind of wonder about what kind of power an na diesel could make... just take the intake off and run open ports for the intake... that will give you better high end power, then flip the exhaust manifold and run a 3 inch pipe out of the hood off the toilet bowl, plenty of flow with those 2 mods. a good clutch and some sticky tires and i bet you could run an 18 flat in the quarter mile. :roll: hahaha. but for real i do wonder what kind of power they could make na
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Actually you could probably do better with a tuned runner intake than with open ports. The reason is that at the tuned rpm, the pulses help the engine breath better than it could otherwise.
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haha i was kidding about the open port
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Jim, would the tuned intake be like a 4-2-1 exhaust in reverse? I've never heard of such a thing.
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and then you'd need to clock the turbo?
what is this btw, I dont understand..
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Baselyne- the idea here is for engines with no turbo at all. playing with the intake and exhaust for increased flow is an old skool way of making power by a better naturally aspirated (n/a) flow of air and exhaust through the engine. Since there is no turbo, you can play with the length and configuration of the pipes. none of this applies to a turbocharged car.
I still don't understand how Giles can get that much more power than stock, even out of an N/A. I would think Bosch would have grabbed him and taken him over to Germany by now. :) better get that performance diesel rebuild soon :D
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Jim, would the tuned intake be like a 4-2-1 exhaust in reverse? I've never heard of such a thing.
All the runners are the same length, and the length determines the resonant frequency, kind of like a pipe on a pipe organ. The longer the pipe the lower frequency. Since it resonates, it has higher and lower pressure waves bouncing back and forth down the runners. When the higher pressure pulse coincides with the intake valve opening, the cylinder gets more air than it would normally. But it's a fairly narrow band that this happens at.
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sorry i wasnt paying attention there... Im still interested in this thread as ive been messing with this kinda thing for a while now...
gasser exhaust mani has noticable gains forsure
Would there be a way to remove the air filter and seal up the big box...run a CAI or ram air system and use the stock N/a diesel intake as a air chamber expansion tank...
as described in this vortex thread apon a gasser rabbit
http://forums.vwvortex.com/zerothread?id=2528906
I know, I know.... but try an work with me...
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There would be no reason to have an expansion tank I could see. You need quite a bit of speed for ram air to have much effect as well. Having a lower mounted intake at the front of the car would worry me in the rain. One good puddle splash is all it takes to hydrolock your motor.
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what about running it to the intercooler instead...Somehow make a double inlet....or grab on of those single inlet intercoolers?
Or by-pass valve...!!??
http://cgi.ebay.ca/AEM-AIR-BYPASS-VALVE-2-5-w-CLIP-20-401s_W0QQitemZ250207890691QQihZ015QQcategoryZ33659QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
Your the ones with the knowledge...Im just trying to learn
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An IC is a waste on a NA car. I guess the bypass might solve the water problem, but it seems like it would be restrictive. A Y type valve would make more sense to me.
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http://victorylibrary.com/mopar/intake-tech-c.htm