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Old 02-21-2009, 11:17 PM   #1
94legacy2.2
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Default switching from side feeds to top feeds

Just wondering if anyone has done it and if they had to have spacers/plugs made for the hole on the side feed manifold.

If you have it done or know where to get more info please let me know. I searched to about page 15 and no luck

Thanks
Tyson
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Old 02-22-2009, 04:33 AM   #2
col5555
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Yes it can and has been done. There is a company in the United Kingdom that make a conversion kit. I cant for the life of me remember who it is at the moment but if you do some googleing I am sure you will find it. If no one else chimes in with the name I will find out. Just remembered Davey Clark or David Clark or close to it.
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Old 02-22-2009, 04:49 AM   #3
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Sorry! the name is Carl Davey
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Old 02-22-2009, 12:56 PM   #4
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PM me if you'd be interested in these....
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Old 02-22-2009, 01:21 PM   #5
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ultimate racing makes top feed conversions
pricey to say the least
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Old 02-22-2009, 08:38 PM   #6
94legacy2.2
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PM sent to Storm
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Old 02-23-2009, 09:36 AM   #7
birdman.1
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Hope it doesn't sound like a dumb question, but what is the benifit to switch from a side feed to top feed? Also is there a benifit to switch the top fuel rail on a top feed set up with larger injectors.
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Old 02-23-2009, 09:49 AM   #8
94legacy2.2
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The main benefit is the market for top feed injectors.
also the side feed rails dont like to flow injectors above 800cc or so.
Im planning on switching to top feeds with my car and with another car. The other car will be running 1000cc top feeds with e85
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Old 02-23-2009, 10:00 AM   #9
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Ah excellent. Thank you. I have a 2003 WRX and i guess it comes with factory top feed injectors. Is there also a benifit to change the rails when doing a larger set of injectors? I have seen a few companies that offer fuel rail kits and not sure what that benifit would be,
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Old 02-23-2009, 10:02 AM   #10
94legacy2.2
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na no benifit to it, just looks. Now once you start making 400+ maybe a tad lower then you might out flow your stock rails. But by then you should have a pimp setup and want new rails cause they look purty
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Old 02-23-2009, 11:34 AM   #11
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Ah, I am currently bulding this out for a back up car in time attack. I am aiming at 430-500 whp. I 've got a good project ahead of me and it sounds like im on the right track from my local guy. Thank you for the info.
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Old 02-23-2009, 12:03 PM   #12
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Much easier to just buy some top feed TGV's, and use some wrx fuel rails. Then find a wrx harness to steal the injecter plugs from then your set.
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Old 02-23-2009, 05:37 PM   #13
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Quote:
Originally Posted by Token-Negro View Post
Much easier to just buy some top feed TGV's, and use some wrx fuel rails. Then find a wrx harness to steal the injecter plugs from then your set.
Will the TGV's work on the older intakes? I highly highly doubt that
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Old 02-24-2009, 12:18 AM   #14
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Quote:
Originally Posted by birdman.1 View Post
Ah excellent. Thank you. I have a 2003 WRX and i guess it comes with factory top feed injectors. Is there also a benifit to change the rails when doing a larger set of injectors? I have seen a few companies that offer fuel rail kits and not sure what that benifit would be,
Fuel rails are benefitial for a few reasons.. The biggest reason is a more even distribition of fuel to all cylinders.. The stock setup is rather restrictive and tends to starve cylinder # 3. Also increasing the line size will help flow more fuel to each cylinder.. That's never a bad thing.
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Old 02-24-2009, 12:46 AM   #15
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Quote:
Originally Posted by bigmike25rs View Post
Fuel rails are benefitial for a few reasons.. The biggest reason is a more even distribition of fuel to all cylinders.. The stock setup is rather restrictive and tends to starve cylinder # 3. Also increasing the line size will help flow more fuel to each cylinder.. That's never a bad thing.
yeah, having the rails in series, the input on one side and the reg on the other is terrible as far as distribution goes.
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Old 02-24-2009, 12:50 AM   #16
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Why are you going through the hassle unless you need larger than 800cc injectors?
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Old 02-24-2009, 07:32 AM   #17
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Set your PM box to accept replies then......
Quote:
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Old 02-24-2009, 08:51 AM   #18
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Quote:
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Set your PM box to accept replies then......

damn inbox.
ill do it now
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Old 02-24-2009, 08:53 AM   #19
94legacy2.2
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Hey storm try that now and see what happens
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Old 02-24-2009, 01:50 PM   #20
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Quote:
Originally Posted by reddevil View Post
Why are you going through the hassle unless you need larger than 800cc injectors?
He was also posting for me. We were both wondering. I want to run 1000-1200 cc eventually. There are also much much cheaper options for large top feeds as opposed to large side feeds.
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Old 02-24-2009, 02:20 PM   #21
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I am almost done building custom brackets for my conversion. Just plan out what you need to make it fit then take everything to a machine shop and tell them exactly what you need. I was able to have a piece of aluminum milled to the thickness I needed for a 6 pack of beer. Drill a couple of holes with a counter sink and your are in business. Kind of a pain in the ass but a cool little project no less. I did all of the fabrication with my friend as the machine shop charges $100/ hr for labor. Now I have to have my aftermarket fuel rails machined to fit the bracket I made. It's amazing how persuasive some ice cold beers can be

I can take pics if you want an idea of what your lookin for.
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Old 02-24-2009, 06:39 PM   #22
94legacy2.2
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pictures are always good. Please share
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Old 02-24-2009, 07:13 PM   #23
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Ok, no problem. I will try to get some pics up for you tonight
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Old 02-24-2009, 10:01 PM   #24
hp1050
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Google "Carl Davey" he does a sidefeed to topfeed conversion kit with brackets.
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Old 02-24-2009, 11:51 PM   #25
turboed22
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Quote:
Originally Posted by hp1050 View Post
Google "Carl Davey" he does a sidefeed to topfeed conversion kit with brackets.
read a few posts up. Someone already mentioned him
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