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Engine Specific Info and Questions => IDI Engine => Topic started by: subsonic on August 01, 2007, 11:49:16 am
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I saw this while I was checking out some info on extrude honing.
This guy is running a mech inj pump. Massive flow increase through his injectors. I am thinking you would greatly reduce pumping loss. Lots and lots of possibilities.
http://www.extrudehone.com/news/details.php?id=9
Jim
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Wow, I'm intrigued.
I really may do this, it's pretty cheep.
http://gethoned.com/parts.php?get_price=yourparts&show=diesel
Thanks for the link.
-E
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There local for you buddy. :)
They have a section for group buys. Good discount if you get enough parts.
So for the injectors, would you send them the nozzle or the whole body?
I sent them a e-mail asking if they have done any work on the 1.6, 1.9 idi and TDI injectors. I told them that if they had not, I could probably find some volunteers who would offer up some injectors for modification. Test bed anyone? :wink:
I also asked about what they could do with our heads. I was told that they have done them before, and that you could expect a
15-20% increase when done.
The whole thing is kind of interesting. I did quite a bit of reading on the company. They seem to be the real deal. Good gains to be had in many different applications.
I was wondering about our exhuast manifold. A equal length manifold kicks ass, but is not cheap. Our stock manifold appears to suck hind tit as far as performance flow. I have not been able to find any other option as far as exhaust manifolds go. I was wondering how much you could remove from the stock manifold for big flow / spool time improvement?
That train of thought leads me right into my other question.
Porting V.S Extrude Hone ?
From what I have been reading, the extrude hone talks about increasing volume and flow velocity. The bigger gains of the two being velocity.
If I had my head ported, would it be the same? Posts on other sites said that a serious port job will offer more flow than the extrude hone.
Velocity V.S Volume? hmmmm....
I am wondering, if you had this done on your head-- intake and exhaust ports, would it remove material at the same rate through out the whole channel? Would this create thin spots in some area's that a regular port job would not?
Has anyone here used this service before? Whats you take on it?
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I wonder if i had my merc NA34X injectors done about 30% if that would be to much fuel. Or not enough :twisted:
I haven't got my VNT on yet so i haven't had a chance to put the injectors in. I'm kinda waiting cause i think the n/a will be over fueled.
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I don't think it'll work on a pintle style injector. :(
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I don't think it'll work on a pintle style injector. :(
x2
Why worry about injectors. Stock 1,6 ones will flow enough to get 250+whp. It is tested and dynoed... Injector head ache is for direct injection guys :wink:
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What about the extrude hone vs porting?
It appears that one opf the big flow restrictions is the stock exhaust manifold. I have not seen a better replacement yet. Could this open it up a bunch for better flow, or would porting be better?
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i don't think the exhaust manifold is a significant restriction. think about the size of the prechamber hole that all the air and exhaust has to go in an out of a zillion times a minute. I had a 1.6L TD spin happily over 7000 rpm with a stock exhaust manifold.
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7K! Wow. So what is the benifit to going to a equal length exhaust manifold Like Passenger is selling?
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7K! Wow. So what is the benifit to going to a equal length exhaust manifold Like Passenger is selling?
lower EGT's and less exhaust back pressure. it also eliminates hot spots due to the fact that the outside two outside cyls have a longer run and the two inner cyls have a shorter run so they are more prone to heat damage.
i've seen a toyota diesel with 0 compression on one cyl going up to 320 on the other end. if an equal length manifold was used, it probably could have survived whatever the p/o did to it (probably had it to the floor towing something huge, or going uphill)