6th Gen ('00-'05): NEW Borg Warner turbocharger arrived today....Pics
Joined: Apr 2010
Posts: 12,601
From: Mentor, Ohio
Pacer pretty much nailed it. Frank put an entire L26 into his Monte to replace a blown up L36. He kept the aluminum UIM.
There is one vacuum line to tend to, but there are multiple answers to that issue.
The LIM is the same from an L36 and L26.
I'm sure Pacer or I could help with pics (as I have an L26 UIM I am trying to sell in a running for sale thread I have, but Pacer mentioned he's got one first on this thread so I'm not trying to steal a sale, just willing to share info and pics).
There is one vacuum line to tend to, but there are multiple answers to that issue.
The LIM is the same from an L36 and L26.
I'm sure Pacer or I could help with pics (as I have an L26 UIM I am trying to sell in a running for sale thread I have, but Pacer mentioned he's got one first on this thread so I'm not trying to steal a sale, just willing to share info and pics).
its not really worth the hassle unless u want to paint Uim and use a larger tb. The evap is different so your going to have to drill and tap depending on how you want to route.
BonnevillePRO.com • View topic - L26 aluminum UIM on L36--Done! With results!!
BonnevillePRO.com • View topic - L26 aluminum UIM on L36--Done! With results!!
Joined: Apr 2010
Posts: 12,601
From: Mentor, Ohio
I recently re-read this thread and first, I think I mis-read Pacer's original statement (I'm not sure if he was talking about having L26 exhaust mani's or L26 UIM originally).
So I'm not sure if I really introduced the L26 UIM idea or not lol. Just having one of those moments.
Anycase, as for the L26 UIM, as I understand you don't get a performance gain. BUT you do gain better durability. First, if you still use the EGR, the factory stove pipe coming up the plastic UIM has a tendancy to weaken the nylon for the coolant channels that pump coolant through the throttle body. You could drill and tap those coolant ports on the LIM (I did that just to prevent hot coolant from warming the incoming air through the throttle body).
I'm not an expert with turbos, but since they force air into the system, it might be beneficial to have something more solid, that is less likely to break down from heat and age like the nylon does.
I know Turbo Monte has an L26 UIM (he can chime in with his reasons for that swap, as I don't know all the particulars).
All that is really involved in the L26 UIM swap is what Pacer mentioned. A throttle body adaptor from ZZP and figuring out your options for a breather line (as the routing is different, the L36 has a breather that starts in the throttle body after the MAF but before the throttle plate, the L26 was designed with a connection on the top of the UIM that with connect to the air duct after the MAF before the throttle body). Both methods use metered air. Some people add a breather filter to that connection on the top of the L26 UIM, I've seen some that drill a hole in the throttle body and add a fitting and join it like similiar to a factory setup. There is more then one way to tackle it.
If Pacer was offering an L26 UIM for sale, I'm not trying to step on him trying to make a sale. If he was not, I do have one for sale myself. I have a bunch of pics of the one for sale and I have pics from a couple different builds I've seen on the Internet and how that breather was addressed if it's of interest. As I mentioned, Frank dropped an entire L26 in his Monte to replace a blown L36. The '05+ L26 is almost identical to the L36 (except the obvious UIM difference) but it also has forged internals in place of some casted parts (so a little better with durability). The '04 L26 was such an early release, about it's only difference is the UIM and throttle body.
So I'm not sure if I really introduced the L26 UIM idea or not lol. Just having one of those moments.
Anycase, as for the L26 UIM, as I understand you don't get a performance gain. BUT you do gain better durability. First, if you still use the EGR, the factory stove pipe coming up the plastic UIM has a tendancy to weaken the nylon for the coolant channels that pump coolant through the throttle body. You could drill and tap those coolant ports on the LIM (I did that just to prevent hot coolant from warming the incoming air through the throttle body).
I'm not an expert with turbos, but since they force air into the system, it might be beneficial to have something more solid, that is less likely to break down from heat and age like the nylon does.
I know Turbo Monte has an L26 UIM (he can chime in with his reasons for that swap, as I don't know all the particulars).
All that is really involved in the L26 UIM swap is what Pacer mentioned. A throttle body adaptor from ZZP and figuring out your options for a breather line (as the routing is different, the L36 has a breather that starts in the throttle body after the MAF but before the throttle plate, the L26 was designed with a connection on the top of the UIM that with connect to the air duct after the MAF before the throttle body). Both methods use metered air. Some people add a breather filter to that connection on the top of the L26 UIM, I've seen some that drill a hole in the throttle body and add a fitting and join it like similiar to a factory setup. There is more then one way to tackle it.
If Pacer was offering an L26 UIM for sale, I'm not trying to step on him trying to make a sale. If he was not, I do have one for sale myself. I have a bunch of pics of the one for sale and I have pics from a couple different builds I've seen on the Internet and how that breather was addressed if it's of interest. As I mentioned, Frank dropped an entire L26 in his Monte to replace a blown L36. The '05+ L26 is almost identical to the L36 (except the obvious UIM difference) but it also has forged internals in place of some casted parts (so a little better with durability). The '04 L26 was such an early release, about it's only difference is the UIM and throttle body.
Wicked info guys the uim swap is something I am doing at the start of the new season for my turbo build,
Was unaware about the zzp power logs though zippy are you the only one you've heard of these logs failing under that whp or is it known these logs eventually can't handle it, considering I have them purchased allrdy I'm guessing the car tuning logs are actually the best for a turbo build?
Was unaware about the zzp power logs though zippy are you the only one you've heard of these logs failing under that whp or is it known these logs eventually can't handle it, considering I have them purchased allrdy I'm guessing the car tuning logs are actually the best for a turbo build?
Wicked info guys the uim swap is something I am doing at the start of the new season for my turbo build,
Was unaware about the zzp power logs though zippy are you the only one you've heard of these logs failing under that whp or is it known these logs eventually can't handle it, considering I have them purchased allrdy I'm guessing the car tuning logs are actually the best for a turbo build?
Was unaware about the zzp power logs though zippy are you the only one you've heard of these logs failing under that whp or is it known these logs eventually can't handle it, considering I have them purchased allrdy I'm guessing the car tuning logs are actually the best for a turbo build?
ZZP manifolds have the exhaust tubes going straight down into the collectors and actually protrude into the airstream some, which causes turbulence as well. Cartuning exhaust tubes are angled downstream into the collector and therefore do not cause turbulence and actually help you spool up faster. Cartuning's off the shelf exhaust headers will not be able to fit your turbo system unless modified, as they are meant for his turbo kit. So he is custom making me a set with out the exhaust flanges and we will have to weld those on here in Utah per the bends and angles of my systems requirements. In all honesty John's Bad *** Turbo Monte's Cartuning system produces insane amounts of power and it is able to be installed in a matter of hours. I can't say nothing bad about it at all, kind of wish i had went that route, would have saved 10's of thousands of dollars over a full built race motor I felt I had to build. I wanted something that would hold up to the punishment, yet for what I spent I could have bought 6 extra engines and swapped them out when I popped one....
Last edited by ZIPPY02; Jan 16, 2013 at 10:34 AM.


















