Throttle Body Gasket...or Not??
#1
Throttle Body Gasket...or Not??
I want to remove my throttle body for a proper cleaning and in past digging through related posts, cannot determine whether there really is a gasket needed behind it or not. Does anyone know the final answer I need before I pull it off...should I have a gasket to put on or is none needed?
Oh yeah ...1997 XJ6 VDP which makes it a 4.0.
Thanks in advance!!
Bob
Oh yeah ...1997 XJ6 VDP which makes it a 4.0.
Thanks in advance!!
Bob
Last edited by mailshack; 10-18-2010 at 08:02 PM. Reason: See the oh yeah...
#2
Join Date: Sep 2008
Location: Damon /Houston, Texas
Posts: 7,254
Received 2,183 Likes
on
1,355 Posts
no theres not, if youre uncomfortable without one apply a very thin layer of hyloseal to the mating surface or thin layer of grease works too. you only want a seal of scrathches if there are any. This is a machined surface on both and jaguar felt there was no need. Although all later engines they evidently feel as confident about since they added either orings or gaskets to them.
The following users liked this post:
someguywithajag (05-16-2021)
#4
Join Date: Sep 2008
Location: Damon /Houston, Texas
Posts: 7,254
Received 2,183 Likes
on
1,355 Posts
no theres not, if youre uncomfortable without one apply a very thin layer of hyloseal to the mating surface or thin layer of grease works too. you only want a seal of scratches if there are any. This is a machined surface on both and jaguar felt there was no need. Although all later engines they evidently didnt feel as confident about since they added either orings or gaskets to them.
#5
#6
Join Date: Sep 2008
Location: Damon /Houston, Texas
Posts: 7,254
Received 2,183 Likes
on
1,355 Posts
SORRY COULDNT PASS ON THAT 1
#7
Trending Topics
#9
Thank you TopHat. I was considering simply cleaning the mating surfaces well and assembling metal to metal, but if I could end up with idol problems that way, I will absolutely use a bit of sealant. I do not want any uncontrolable power surges in my 4.0!!!
#10
#11
All cleaned up and back in place with a film of grease...
I did get mine off easily and got it cleaned up. I posted some pics that might be helpful to someone who hasn't done one before.
https://www.jaguarforums.com/forum/a...p?albumid=1879
The touchest part was removing the TPS. The screws did not come out easily!
TopHatChef, you're probably right in that a previous owner might've used a curing sealant putting yours back together. However, since it is a flat, face to face mating between the TB and intake, I wonder if you'd be able to break it loose with a couple of screwdrivers placed in the mounting bolt holes and pry it off that way?
When I reassembled mine, I ended up using a thin film of grease as I couldn't find any Hyloseal (as Brutal suggested) locally. I did find out though that Permatex began selling Hylomar Universal Blue; a non curing sealant and I'll have to find some. I want to add that to my tool box for sure.
Thanks for the input Brutal and TopHatChef!
By the way TopHat, are you actually a chef? My son began cullinary classes last year and hopes to make a career of it.
Bob
https://www.jaguarforums.com/forum/a...p?albumid=1879
The touchest part was removing the TPS. The screws did not come out easily!
TopHatChef, you're probably right in that a previous owner might've used a curing sealant putting yours back together. However, since it is a flat, face to face mating between the TB and intake, I wonder if you'd be able to break it loose with a couple of screwdrivers placed in the mounting bolt holes and pry it off that way?
When I reassembled mine, I ended up using a thin film of grease as I couldn't find any Hyloseal (as Brutal suggested) locally. I did find out though that Permatex began selling Hylomar Universal Blue; a non curing sealant and I'll have to find some. I want to add that to my tool box for sure.
Thanks for the input Brutal and TopHatChef!
By the way TopHat, are you actually a chef? My son began cullinary classes last year and hopes to make a career of it.
Bob
#12
#14
#15
Guest
Posts: n/a
#16
I can confirm on a 1997 XJR6 that there is no gasket between the throttle body and the superchartger bypass valve manifold. Even though there was no gasket, the TB was still quite stuck to the manifold and took a sharp whack from my hand to pop off. But the mating surfaces look clean with no sealant other than some minor corrosion. I think the oil from the crankcase ventilation, water and minor corrosion after 20 years just had them stuck fast to each other.
I've ordered some of the Permatex 85249 Hylomar mentioned above though for my reassembly just in case and I'll probably take some 1500 or finer grit sandpaper to the surface to clean it up.
It is odd that there is no gasket though. Even the SC bypass valve manifold has a gasket between it and the SC just inches away.
.
I've ordered some of the Permatex 85249 Hylomar mentioned above though for my reassembly just in case and I'll probably take some 1500 or finer grit sandpaper to the surface to clean it up.
It is odd that there is no gasket though. Even the SC bypass valve manifold has a gasket between it and the SC just inches away.
.
The following users liked this post:
someguywithajag (05-16-2021)
#17
The following users liked this post:
al_roethlisberger (04-17-2017)
#18
Thanks, would you recommend the Permatex Permashield 85420 over the Permatex 85249 Hylomar? Both seem to have good specs and are non-hardening/non-setting.
Where is there an o-ring on the IACV that would need replacement?
The following is an interesting thread discussing factory recommendations for Land Rover applications of sealers, etc:
Hylosil or RTV- any differences? - Land Rover Forums - Land Rover Enthusiast Forum
.
Where is there an o-ring on the IACV that would need replacement?
The following is an interesting thread discussing factory recommendations for Land Rover applications of sealers, etc:
Hylosil or RTV- any differences? - Land Rover Forums - Land Rover Enthusiast Forum
.
Last edited by al_roethlisberger; 04-17-2017 at 08:19 PM.
#19
I suppose either would work, however for some reason, I feel I would go with the 85249 Hylomar product! Both are fuel resistant, which is what is important.
If you remove the two small 5.5mm bolts, you'll be able to pull out the IACV and notice a crushed orange rubber o-ring around the cylindrical piece that inserts into the hole of the throttle body.
http://winkay1.m.ec21.com/mobile/pro...uct_id=9589524
That picture should show the orange o-ring.
If you remove the two small 5.5mm bolts, you'll be able to pull out the IACV and notice a crushed orange rubber o-ring around the cylindrical piece that inserts into the hole of the throttle body.
http://winkay1.m.ec21.com/mobile/pro...uct_id=9589524
That picture should show the orange o-ring.
Last edited by Vee; 04-18-2017 at 07:55 AM.
The following users liked this post:
al_roethlisberger (04-18-2017)
#20
Thread
Thread Starter
Forum
Replies
Last Post
rominempire
XJ XJ6 / XJ8 / XJR ( X350 & X358 )
28
10-08-2020 10:39 AM
FS[NorthWest]: XJ8 / XJR 3" Mina Gallery Intake Pipe only (For X308)
xjrjag
PRIVATE For Sale / Trade or Buy Classifieds
3
10-12-2015 03:16 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)