egr blockoff plates
06-21-2004, 12:37 PM
#2
http://cgi.ebay.com/ebaymotors/ws/eB...tem=7906093482
I bought my block off plates from this guy, Matt. Very good quaility and it was shipped right away! I defenitly recommend getting some from him.
I bought my block off plates from this guy, Matt. Very good quaility and it was shipped right away! I defenitly recommend getting some from him.
06-21-2004, 05:02 PM
#4
TECH Veteran
iTrader: (53)
Join Date: Feb 2004
Location: Monticello, Kentucky
Posts: 4,433
Likes: 0
Received 0 Likes
on
0 Posts
If you're talking about the pipe on the pass side, I just cut the tube off mine and welded some scrap metal over the plate and bolted it back on. I haven't touched the valve yet though.
06-22-2004, 12:06 AM
#6
well u wont see any hp gains...if fact i here alot of guys saying it is even bad...taking off the egr will make the motor morely likely to detonate...the AIR PUMP is something people move if they have no cants, dont pass emission anyway/or dont need to, and are very strict on weight loss "every pound counts", and clean up of course...can some one correct me if im wrong.
06-23-2004, 09:42 PM
#7
TECH Veteran
iTrader: (53)
Join Date: Feb 2004
Location: Monticello, Kentucky
Posts: 4,433
Likes: 0
Received 0 Likes
on
0 Posts
Well the blocking of the EGR pipe I know is to eliminate the intake manifold oil leak. I always read that the EGR pipe puts those hot gases in the manifold and cause the gasket to go bad and leak oil. I never had it happen though. I haven't removed the valve because EGR is disabled via LT1 Edit and it isn't heavy and I don't wanna fool with making a block plate.
Trending Topics
07-08-2004, 06:29 PM
#8
TECH Resident
iTrader: (12)
Join Date: Jul 2004
Location: Georgetown, IL 61846-1105
Posts: 987
Likes: 0
Received 1 Like
on
1 Post
A buddy is making them out of 1/4" Stainless for $36 shipped, his AOL name is LT1TA1994 tell him I sent him to ya, he might get ya a lil better of a deal....His name is Dustin Hodges...He's in VA
07-10-2004, 06:37 PM
#10
WHOAAA. it is true in fact that removing the egr from an LT1 does more harm than good. A reply letter in PHR magazine from some performance engineer at GM told the story. He said it was not a good idea, that actually GM would have put one on the 97 LT4 but it was not produced. The claim in 96 was that the cam profile on the LT4 was so good that it did not create enough CO that it needed it. But turns out, it did. If you're all out race or have a decent size cam, then NO, but if still running stock cam, keep it for now. IMO.
08-16-2004, 12:36 AM
#12
We initiated manufacturing LT1 blockoff plates back in 1995, as LS1's arrived, we have been making those also.
All our egr block off plates are made from 6061 T6 hardened grade aluminum machined true.
Gaskets are NOT necessary high temp RTV is preferred. Actually, on the LT1, there is NO provision for a gasket on the header. The design is meant for a compression fit with the mating tube.
In fact, there is no gasket available for this port!...only way to get one is if someone made one up from gasket material. Making one will leak MUCH easier then high temp RTV due to the design of using one bolt and initially cut for a compression fit. I HIGHLY recommend using RTV only for this seal. Furthermore, the mating surface is generally not donform well to any gasket made.
Generally, the stock intake gaskets can be reused though RTV sealant since it really is the only wise choise on the header plate, using it for the rear intake can be just as easily done.
There are more benifits from removing the EGR vs. disadvantages.
Benifits include:
1) Repairs stumbling problems at idle from defective EGR.
2) Keeps engine and intake MUCH cleaner due to not recyling burnt exhaust gases.
3) Cleans up engine bay clutter.
4) Makes header changes/intallations easier since there are less components to re-attach/remove.
5) less components to troubleshoot when problems arrise.
6) Keeps hot exhaust gases from re-entering intake
Regarding detonation, the only increase in detonation would be if you were bogging your engine which is not a good thing to do. The EGR is only functional in LOW RPM conditions. It has NO effect on mid-high RPM's and is disabled.
Our LT1 plates are 24.00 and 29.00 shipped for 2 and 3 plate kits.
Our plates are always in stock ready to ship.
Steve
Pres.
All our egr block off plates are made from 6061 T6 hardened grade aluminum machined true.
Gaskets are NOT necessary high temp RTV is preferred. Actually, on the LT1, there is NO provision for a gasket on the header. The design is meant for a compression fit with the mating tube.
In fact, there is no gasket available for this port!...only way to get one is if someone made one up from gasket material. Making one will leak MUCH easier then high temp RTV due to the design of using one bolt and initially cut for a compression fit. I HIGHLY recommend using RTV only for this seal. Furthermore, the mating surface is generally not donform well to any gasket made.
Generally, the stock intake gaskets can be reused though RTV sealant since it really is the only wise choise on the header plate, using it for the rear intake can be just as easily done.
There are more benifits from removing the EGR vs. disadvantages.
Benifits include:
1) Repairs stumbling problems at idle from defective EGR.
2) Keeps engine and intake MUCH cleaner due to not recyling burnt exhaust gases.
3) Cleans up engine bay clutter.
4) Makes header changes/intallations easier since there are less components to re-attach/remove.
5) less components to troubleshoot when problems arrise.
6) Keeps hot exhaust gases from re-entering intake
Regarding detonation, the only increase in detonation would be if you were bogging your engine which is not a good thing to do. The EGR is only functional in LOW RPM conditions. It has NO effect on mid-high RPM's and is disabled.
Our LT1 plates are 24.00 and 29.00 shipped for 2 and 3 plate kits.
Our plates are always in stock ready to ship.
Steve
Pres.
Last edited by steve10; 08-16-2004 at 11:06 AM.
08-16-2004, 02:03 AM
#13
36 BUCKS...man thats alot...i used a fuel block of plate...grinded it down to fit perfectly...for the air pump...same thing if u want it for the egr just do it ur self...save some money.
09-05-2005, 09:33 AM
#17
Originally Posted by yodawagon
the gmpartsdirect.com part number, is that for all 4? if im correct theres 2 AIR, 1 EGR, and 1 manifold.
If you have an LT1 emissions legal setup, you'd be ordering additional parts like others whom realized they needed additional plates ( the only reason why we even sell SJM-1002 as a kit )...
Our kits ARE the originals. You'll find bandwagoning and other companies copying our kits...some giving "free" cheap homemade gaskets away...only use STOCK gaskets or RTV. Some emissions ports do NOT use gaskets, do not attempt to use one as some suggest, RTV only should be used...i.e. LT1 exhaust manifold plate. You cannot use a gasket where ports were compression fit designed.
Our prices are a very good value...no additional hidden charges, free shipping. 100% always in stock ready to ship w/in 24 hours M-F.
Parts can be ordered online w/CC 24 hours a day.
Last edited by steve10; 09-05-2005 at 09:59 AM.
09-05-2005, 03:11 PM
#18
Staging Lane
iTrader: (1)
Join Date: Dec 2004
Location: Houston, Tx
Posts: 93
Likes: 0
Received 0 Likes
on
0 Posts
I've been running the SJM 2 plate kit for a few years now.
Well worth the money in my opinion - nice pieces. I could have made some plates myself, but I decided to just buy prefabbed ones instead. Between the house, wife, kid, and the car projects, my time saved was more valuable than the few dollars more it took to buy the plates from SJM.
Well worth the money in my opinion - nice pieces. I could have made some plates myself, but I decided to just buy prefabbed ones instead. Between the house, wife, kid, and the car projects, my time saved was more valuable than the few dollars more it took to buy the plates from SJM.
