Exhaust Manifolds
Discussion
I just taken the engine out of the car as part of my refurb. Going very well so far, very chuffed.
I'd been told at the last couple of services that the manifolds were cracked. Now with the engine out I think they may be going at the weld of the tube to the plate that bolts to the engine. Which I guess makes sense as it probably experiences the most stress.
Anyway, I've been assessing options for repair/replacement.
New stainless from ACT about £900. (No heat benefit, just looks good?)
New standard manifolds with exhaust wrap, about £700.
Repair (weld) the originals & wrap, guess £300.
Someone told me that repairing is only a temporary solution as the crack will run.
My refurb budget is starting to get a bit out of control, so I'm trying to spend the money for real benefits rather than just bling.
Thanks
I'd been told at the last couple of services that the manifolds were cracked. Now with the engine out I think they may be going at the weld of the tube to the plate that bolts to the engine. Which I guess makes sense as it probably experiences the most stress.
Anyway, I've been assessing options for repair/replacement.
New stainless from ACT about £900. (No heat benefit, just looks good?)
New standard manifolds with exhaust wrap, about £700.
Repair (weld) the originals & wrap, guess £300.
Someone told me that repairing is only a temporary solution as the crack will run.
My refurb budget is starting to get a bit out of control, so I'm trying to spend the money for real benefits rather than just bling.
Thanks
Check the join between the pipes from the front and rear cylinders, they usually crack in the vee there (highlighted in the red circle). Mine had already been repaired (badly) under a previous owner, so I agree that any repair is not a long term solution.
I've replaced mine with nice shinny new ACT units, which (apart from looking nice) have been designed with a better quality material to prevent this from happening again.
Here's mine:
Tim at ACT is very approachable, it's well worth giving him a call. He'll help you find the right solution for you as opposed to just selling you what's best for him.
HTH
Olly
Edited by Boatbuoy on Sunday 4th January 23:40
The old ones that came off mine were cracked/repaired/cracked/repaired/cracked/repaired/cracked. I went ACT stainless and ceramic coated them....but if budget is tight them are these any use....?
http://www.ebay.co.uk/itm/TVR-Cerbera-4-2-4-5-AJP-...
Worth a call at least.
http://www.ebay.co.uk/itm/TVR-Cerbera-4-2-4-5-AJP-...
Worth a call at least.
I bought the performance manifolds from Tim at ACT
If you put them side-by-side with the old manifolds, you wouldn't doubt.
Beautifully made, much better materials, proper welds (opposed to the bubblegum welds of the originals)
I did it because I didn't want to pull them out every year.
If you put them side-by-side with the old manifolds, you wouldn't doubt.
Beautifully made, much better materials, proper welds (opposed to the bubblegum welds of the originals)
I did it because I didn't want to pull them out every year.
NilsP said:
I bought the performance manifolds from Tim at ACT
If you put them side-by-side with the old manifolds, you wouldn't doubt.
Beautifully made, much better materials, proper welds (opposed to the bubblegum welds of the originals)
I did it because I didn't want to pull them out every year.
And me, been one for around 3 years and still fine.If you put them side-by-side with the old manifolds, you wouldn't doubt.
Beautifully made, much better materials, proper welds (opposed to the bubblegum welds of the originals)
I did it because I didn't want to pull them out every year.
Nice power increase as well.
I have an act exhaust which is brilliant and I would add my voice to the quality of build and materials.
but I had similar manifold issues and budget constraints.
so I went for welding the cracks, I researched the correct wire and mig welded all the cracks.
Fingers crossed that was 3 years ago!! And all is still well
I know its not a permanent fix, but definitely bought me some time, especially as the whole job only cost me £30.
but I had similar manifold issues and budget constraints.
so I went for welding the cracks, I researched the correct wire and mig welded all the cracks.
Fingers crossed that was 3 years ago!! And all is still well
I know its not a permanent fix, but definitely bought me some time, especially as the whole job only cost me £30.
Weld, brace between the pipes, External weld the manifold flanges to the pipes and open the ports out to match the head, Then send to Camcoat.
Fraction of the cost, strong pipes and heat reduction.
Personally I wouldn't wrap, it fails after a while, is a pig to work around due to the itchiness, and can cause further damage with water retention.
Fraction of the cost, strong pipes and heat reduction.
Personally I wouldn't wrap, it fails after a while, is a pig to work around due to the itchiness, and can cause further damage with water retention.
I fitted the standard ACT stainless manifolds when i had my 4.7 done and they are spot on as well as a lifetime guarantee, I'm not sure that the multi piece performance ACT ones are worth the extra for minimal performance gains an extra £540! for 10bhp perhaps, your better off port matching as RIDDS mentioned above.
Gassing Station | Cerbera | Top of Page | What's New | My Stuff