ฝัง
- เผยแพร่เมื่อ 10 มิ.ย. 2024
- #tvr #tvrchimaera #workshop #garage
Exhaust manifold leaks are pretty common on TVR Griffith and Chimaera models, but they're not normally this bad!
*this isn't a how-to guide, it's just entertainment
00:00 - 04:55 Test drive
04:56 - 23:35 Exhaust off
23:36 - 33:51 Diagnosing & refitting
Thanks to the owner Gerald for letting me film his car. (He's owned it from new, how cool is that!?)
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Another great video thanks I hope all TVR owners know about you because you definitely know your stuff 😊
Ha, thanks! Enough know for me to run a business out of it.
That design of manifold will make it difficult for the light fingered brigade to give the car an unexpected de-cat. Very forward thinking of TVR.
Great little tinkering Video Rich, very enjoyable to watch.
Well done for sorting out the problem. Another highly entertaining video!
*GASP* And is that a Citroen SM I saw in the background...... you've not mentioned that (recently) 😉
Another great example of problem solving and fixing..... and show casing how awesome Blackpool engineering is. 😄
Wish we had more TVR’s in Denmark, absolutely love seeing (and hearing) these cars
Lovely tinkering as well, uncovering some mystique of these British beasts and educating my intrigued brain on how genius they actually are
Cheers for another great video 👍
Thanks, they actually are well engineered. Far more than people give them credit for.
What a lovely sounding beast though.
I'm pleased to see that TVR uphold that Great British Tradition of leaking oil everywhere...
The sump gasket was leaking (standard RV8). I did actually film that too, but the video got too long.
How can a video be too long? It's about 24.5 hours too short if you ask me
@@UPnDOWNIt means you haven’t seen Tasty Classics yet. 2h+ long videos. I love it
More TVR content please!!
Thanks Rich! Enjoyed it!!
Good job, well done
I have the later 450. Slightly different front clamping arrangement but great to see it done by a pro. Just doing the Brembo 4 pot front brake conversion. Self made . On my channel. Thanks for sharing.
Yeah, to be fair most have the V-band clamp, it's only the very earliest ones that had the bolt fitting like this.
First class video and work on this TVR Rich.
Looking at that manifold as you were cleaning it off,it looks bent slightly,a straight edge along the ports would tell you if it is, like you said earlier they do warp a bit . Nice car though,I'd certainly have one for sure 👍
I don't think you'd be able to tell that from a phone's camera perched on a pot of paint! But yes, they do warp sometimes. This one is pretty true along the mating face, but in relation to the Y-piece connection it could well be pissed.
Haha... weird not seeing you on a Citroën.. Great video.. Thanks
Great video! I recall the spark plug extenders: ran a few Mk1 Astra GTEs which had them, I think three out of four needed them. There was also a later version where the shield was fitted to the lead. I guess fitted to an FWD car, facing the radiator, they probably didn't suffer the same heat issues as the TVR, as they'd be in the airflow.
Magnificent car. But does look like it tests the Patience
Mmmm, not as much as the rumours would have you believe. The access to certain components is tricky, but for a specialist car they're quite simple to work on. Time consuming but not too difficult, but then I suppose I'm used to them.
@@UPnDOWN I have that in the field I work in. The same job description has vastly different labour hours. Due to Manufactures choices.
You DID tell us that you have a Chimaera ! 😊
Yeah, mentioned it loads of times. It's not an SM or anything like that!
I know nothing about TVRs, they do look and sound fabulous. One of the guys I worked with often got slagged off though as he had to get the bus to work quite a lot.
If only you'd "Pulled a B.O.M." and left a suitable allium in the manifold...
Love seeing you work on the TVRs.
That's a plant, isn't it?!
When you were talking about the exhaust spitting bits of sealant at the cat, I had an image of you running it up in the sitting room until I realised what "cat" meant in this context.
As for why the gasket blows: Two reasons. 1. The gasket itself is utter rubbish. I would guess Olds or Buick still has that same gasket flange, if not the exact gasket in some of their heads. A proper black one with copper spray would hold for significantly longer. 2. The flange gets hot, bcz it restricts exhaust flow. While you had it on the bench and your witness marks were visible, you could've ported the flange to fit the head. Just blending the hard ledge out would've saved you from doing this same job next summer. A shop vac saves the cat.
3 mm is enough wall thickness for a gasket to seal, if it doesn't heat up from exhaust vortex and extra pressure. If it does that, it also warps the flange and no gasket is capable of handling that. Blending/port matching the header solves these.
Good work, I have to attempt to fit my Clive F Manifolds to my Griff yet, they are looking shiny in their box atm and my knuckles are in good nick so im good to go soon for a day of Pain!
Love your Channel and content.
I have a few Tvrs and i do need some one to give my Cerbera a good tune up , its running on Emerald ecu and want someone clever to get a good map sorted. Interested?? 🤔
The equal length ones? Those are a work of art! (And an absolute bastard to fit)
Tuning not my speciality, sadly. Powers are probably still the guys for that on a Cerb.
@@UPnDOWN Clives Gt manifolds, don't think equal length and agree they are a masterpiece of manifold creation.
Ok Thanks i think i will try and book a slot to get Joolz at Kit and classics for a tune up, its probably in good tune but just to get it checked and micro adjusted could be beneficial.
My kind of Micro adjustment is a Big Hammer and a block of wood....
Colin Apps at TVRS SW looks after my Tivs, A Big Bear of a man and like yourself Proper mechanic.
Not Many left ...
Top work Pal.
A couple of questions...
You showed that the outlets had been bored out a little, then also showed the horrific witness marks that suggested that the outlets didn't match up remotely to the manifold.
Would this have potentially hastened the failing of the gaskets (as well as the pitting)?
Would this make the larger inlets pointless, since the extra area created for gas output just gets caught up on the factory spec manifold and gasket size? Surely the whole point is to provide a more freely breathing exhaust with less back pressure, but if the manifold and gaskets are in the way then it just nullifies it?
More than likely could be matched better, yes. The main reason for demonstrating the larger bore of the ports was to highlight why the gaskets fail more often. Would still give you a performance advantage over the 3mm smaller port, though.
I didn't mention anything about larger inlets. AFAIK the trumpets are the same size. Throttle body certainly is.
@@UPnDOWN sorry, typo, I meant to say outlets there, not inlets!
But thanks for taking the time to reply
I’ve got one of these 1994 same colour, it’s been under sheets in a garage for 14 years, what could possibly go wrong
I don't know about the Chimaera, but I would like a Nigella!
Is that a TVR?!
Would copper grease not help for the bolts
I've had a couple still fuse up even with copper grease, but never with the 3in1!
Manifolds will be creating a reversion dam and reduce the potential of the headwork, without some smoothing of the mnifold that engine will be down on its potential power output.
Probably, but I wasn't tasked with attending to that, and it's been pokey enough for the owner for 31 years...
I think they made everything a bit marginal in the widened port / manifold area compared to the original Rover design… much less clamping / sealing area and a complex exhaust hanging way off the front of the enlarged tuned engine on a sports car chassis… the weakpoints will be found out. But you’ve sorted it until the next time.
I’d suggest a belt sander to quickly clean up the manifold and dress the face nice and flat and without the pitting ?
To be honest I try to avoid sanding down the faces in case I make the fitment worse overall. It's pretty marginal to begin with!
Off topic. Where do you buy your 'green balls' from?
I don't have a preferred supplier, but I tend to only buy IFHS branded, or genuine N.O.S.
@@UPnDOWN ta
What does the 400 stand for, surely not hp ?
No it's the amount of money you have to spend every month,to keep it on the road 😂😉
4 litres engine
400: 4.0ltr
430: 4.3ltr (actually a 4.2)
450: 4.5ltr (actually a 4.6)
500: 5.0ltr
This particular car is quite a rare one as it has '250' on the badge. It basically means it's an early version of what became known as the 400HC (high compression).
250 means 250bhp, and while it might not be quite there, it's probably a lot closer than most 400s!
Sounds like the bearings might be going out on your angle grinder. I just saved one of mine with a new £4 bearing.
They better not, it's a couple of months old!
@@UPnDOWN Might just have been the microphone, but often the gears aren't well lubricated, even on new grinders.
Fixing manifold faces, get yourself a piece 1/4 inch strip of glass, spray the surface with WD40 and knock off the high spots with a grinder, sorted. Love the (paying jobs), but get the wife to buy you a watch that fast forwards time, she might see more of you. 😁😁😁
🥝✔️
Same as mine you don't know were I can get a petrol sender for one
Tried Racetech?
@UPnDOWN yes no luck thanks there like hens teeth 😬 get video my car has a gas flow heads too
I hope you have not blown asbestos dust all over your garage. My dad died from asbestosis from dust in the air of his workshop. I would use Coppaslip on the bolts rather than 3 in 1.
Unlikely to have asbestos in modern car parts, what with it being banned since 1999.
I used to use copper grease, but stopped when the bolts still galled. Since I've used 3in1, it's never happened.
oh what's that white thing on the left hiding behind the tyre wall?🤣
It's actually a Citroen SM, but I've kept fairly quiet about it.
@@UPnDOWN I didn't think you'd mentioned it
sump gasket doesnt look too clever either
It wasn't - I changed that afterwards (and filmed it, but the vid got too long)