UCF10 headers
03-11-14, 01:55 PM
#16
My buddy made headers for a 1uz in a corolla and they turned out great but that was all custom for track only and i don’t want to go that route quite yet.
Performance wise i think any of the above would be better due to the simple fact that our factory system has about the most janky looking headers ever. and ports are amazingly bad. The above may not be high quality but airflow wise anything is a step up.
03-11-14, 08:24 PM
#18
there will almost always be power gains over stock.
The question is how big and where, but also where will the losses be?
For $350 and probably less than a weekend of time for install, assuming the parts fit properly, the returns are probably worth the price. That said, headers on their own will make little to no difference without supporting mods like a full exhaust and a less restrictive intake... Now as far as the LS goes --and I differ to PD's experience with these cars-- but from unequal comparable cars, you might see a 5% gain without a tune, maybe 10-15% with a tune on a hopelessly restrictive header and exhaust combo.... something the LS is not crippled with.
If your goals are a minor/non-existant increase in power but lots of rumble and bark, then sure, go nuts.
In a money no object scenario, you are still limited by the tuning. Sure you could design a much better header that maximizes scavenging and pulse velocity, it would be in a certain RPM range only though, but you are not going to get 100% out of it without the ability to tune it. From everything I have seen so far, the LS isn't really restricted by flow but by refinement. These cars were engineered to be silky smooth, effortlessly powerful and comfortable cars. Toyota did not really consider the 10-20 year-out aftermarket potential/appeal of these cars when they were doing R&D; so space for crazy stuff was not allocated like with Domestics or more performance oriented platforms.
I keep wrestling with the idea of doing an exhaust on this car...
every time i hear a nice exhaust on Youtube, i get that itch and am like "yeah i totally want an exhaust for the car!" But as soon as I get back into the car and relax in the serenity of not having that drone of an exhaust I smack my self and wonder what I was thinking... Then the cycle repeats....
Oh and,
OBX stuff is beyond hit and miss. for every 10 cars I saw with an OBX product, maybe 1-2 fit like stock; ~5 needed modifications to the part itself or other parts to work; the other 3-4 were hopelessly wrong and usually needed massive changes to fit or new attaching parts fabricated or had to be returned... so be warned if you are not overly familiar with OBX.
The question is how big and where, but also where will the losses be?
For $350 and probably less than a weekend of time for install, assuming the parts fit properly, the returns are probably worth the price. That said, headers on their own will make little to no difference without supporting mods like a full exhaust and a less restrictive intake... Now as far as the LS goes --and I differ to PD's experience with these cars-- but from unequal comparable cars, you might see a 5% gain without a tune, maybe 10-15% with a tune on a hopelessly restrictive header and exhaust combo.... something the LS is not crippled with.
If your goals are a minor/non-existant increase in power but lots of rumble and bark, then sure, go nuts.
In a money no object scenario, you are still limited by the tuning. Sure you could design a much better header that maximizes scavenging and pulse velocity, it would be in a certain RPM range only though, but you are not going to get 100% out of it without the ability to tune it. From everything I have seen so far, the LS isn't really restricted by flow but by refinement. These cars were engineered to be silky smooth, effortlessly powerful and comfortable cars. Toyota did not really consider the 10-20 year-out aftermarket potential/appeal of these cars when they were doing R&D; so space for crazy stuff was not allocated like with Domestics or more performance oriented platforms.
I keep wrestling with the idea of doing an exhaust on this car...
every time i hear a nice exhaust on Youtube, i get that itch and am like "yeah i totally want an exhaust for the car!" But as soon as I get back into the car and relax in the serenity of not having that drone of an exhaust I smack my self and wonder what I was thinking... Then the cycle repeats....
Oh and,
OBX stuff is beyond hit and miss. for every 10 cars I saw with an OBX product, maybe 1-2 fit like stock; ~5 needed modifications to the part itself or other parts to work; the other 3-4 were hopelessly wrong and usually needed massive changes to fit or new attaching parts fabricated or had to be returned... so be warned if you are not overly familiar with OBX.
03-12-14, 05:08 AM
#20
My S&S headers bolted right in but the exhaust side flanges did not match up with my factory ones. So I welded on new universal ball style flanges on them and the exhaust. I thought everything was good after that until I went to install the driver side O2 and it hit the steering rack.
Anyway, the point of this is that these were basically made for the car and I still had to modify them.....
Anyway, the point of this is that these were basically made for the car and I still had to modify them.....
03-12-14, 07:13 AM
#21
Thanks and ill probably buy a cheap set to get ideas and mock up my own set that will fit.
03-22-14, 10:49 AM
#28
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