Header / Expansion Tank info
Header / Expansion Tank info
Author
Discussion

TVRleigh

Original Poster:

6,553 posts

242 months

Thursday 5th July 2007
quotequote all
Anyone know why the header tank inlets are on the wrong side. I know they justed used a ford header tank. but just wondering why they chose that one.

Also is there any recomended size for a header tank. is bigger better or smaller.

Also it has a overflow, the new style ones with the new style caps, don't have a overflow pipe. is this because cars are more relible and lesslikly to overflow.

I did have the option on my new tanks made to have them old or new style, I stuck with the old style. (was the the right choice.)

ed_crouch

1,169 posts

271 months

Thursday 5th July 2007
quotequote all
www.nfauto.co.uk sell a rather nice polished ally expansion tank with a couple of mounting options, and it seems to fit rather nicely in place of the placcy Ford one.

Its about 100 quid IIRC.

Please dont just take my word about the fit: I only measured up the principal dimensions, and it seemed that it would go nicely.

It'll get rid of the unwanted extra vent stub too. Well, it will be unwanted assuming youve done what I have and removed the dappy hotspot and replumbed the air bleed and heater systems...

Ed.

TVRleigh

Original Poster:

6,553 posts

242 months

Thursday 5th July 2007
quotequote all
Well I've had a custom tank made with all the same size inlets and outlets, just on the other side, plus the out coming from the side also not the bottom.

Was just curious about the design, I'm surprized TVR kept the hot spot.

I have just joined the hoses together to bypass the hot spot. is that ok. never really checked where it comes from.

Will post pic's of new tank tomorrow

ed_crouch

1,169 posts

271 months

Thursday 5th July 2007
quotequote all
Yeh, i believe its what most people do. Being slightly anal i removed it completely and sealed the through-bored bolt holes (into the plenum!!) with cap headed setscrews, and then replumbed the air bleed system to get rid of some hoses.

Ed.

TVRleigh

Original Poster:

6,553 posts

242 months

Friday 6th July 2007
quotequote all
Yes I removed the unit, and sealed with caped bolts. my try and get some grub screw's though.

adam quantrill

11,679 posts

271 months

Friday 6th July 2007
quotequote all
Just saw a bolt off at the end after sawing a screwdriver slot in it. You'll be saving a few grams kerb weight!

TVRleigh

Original Poster:

6,553 posts

242 months

Friday 6th July 2007
quotequote all
Thats what grub screws are arn't they wink

deetes

413 posts

262 months

Saturday 7th July 2007
quotequote all
http://www.pistonheads.co.uk/gassing/topic.asp?h=0...

Made mine in stainless. You can see the pics in the link above.

TVRleigh

Original Poster:

6,553 posts

242 months

Monday 9th July 2007
quotequote all
Yes looks very nice.

Im sure you could sell them if you are willing to make any more. stainless can be a pain to work with tho.