Speed 6 engine failures. Not what you think??

Speed 6 engine failures. Not what you think??

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Discussion

heightswitch

Original Poster:

6,319 posts

257 months

Friday 3rd October 2003
quotequote all
Hi all.

As the owner of the engine bit only, not the pretty plastic bits, can people please enlighten me as to what the extent of the engine failures were on cars that failed.

I may be speaking out of turn here but it appears that a lot of these cars are purchased by non mechanically minded people that put the cars into the dealer when they go wrong. I will not have that luxury.

It would help me immensely if someone could advise as to the extent of the re-builds on the engines, IE is it confined to head, head and valves, guides, scored bores, liners and or re-bores etc etc.

I promise not to comment on reliability one way or t'other.

All I will say is that as a bit of a phsyco I am fitting one of these engines to my TR6.

as part of the installation I will be probably loosing the cats, junking the MBE engine management system, re-working top end lubrication and trying to ensure that whatever you tell me has failed in the past doesn't fail in my engine.

With 360hp in a TR6 I can probably even richen the mixture and reduce slightly the rev limit for reliability by using a mapped weber alpha engine management system.

Thanks
Neil.

PetrolTed

34,443 posts

310 months

Friday 3rd October 2003
quotequote all
Class

Keep us informed of the build - this sounds like an excellent motor!

Most of the problems anecdotally (sp?) would seem to be valve train related.

skid

652 posts

264 months

Friday 3rd October 2003
quotequote all
top motor and top fella! Can't wait to see it.

unrepentant

21,671 posts

263 months

Friday 3rd October 2003
quotequote all
360 BHP in one of those little old Triumph TR6's? You've lost the plot mate.

Can I have a go in when it's finished. Please. Please. Please.

Keep us posted on progress won't you.

andyvdg

1,537 posts

290 months

Friday 3rd October 2003
quotequote all
You must have lost the plot big time.

Fantastic!

Let us know how it goes. I think cam/follower wear is the most commonly stated cause. But who knows ?

Oh, TVR do

Cheers,

Andy.

heightswitch

Original Poster:

6,319 posts

257 months

Friday 3rd October 2003
quotequote all
So presumably if cam followers wear, we are not destroying the cylinder block assembly?

I am assuming that followers will damage a cam lobe!

or is the other end of the follower to blame in contact with the valve and piston crown?

Are the followers just soft and wearing the cam or breaking causing a valve to drop, or worse contact the piston?

This information would be very helpful. I could use the detail which will help me decide whether to strip the engine down and re-manufacture the items myself before they break and damage an otherwise reliable engine?

Neil.

mad-dot

341 posts

265 months

Friday 3rd October 2003
quotequote all
Lose the cats, that's what caused my engine failure----sucked in a small part, which jammed between a valve and seat!

Graham B

1,360 posts

290 months

Friday 3rd October 2003
quotequote all
Just out of interest, what are you planning to do to the rest of the car to ensure it'll be able to handle all that power?

Graham
Ps Used to lust after TR6's in my youth!

beano500

20,854 posts

282 months

Friday 3rd October 2003
quotequote all
Hmmm! What a great idea!!!

As far as the engine technology is concerned, well I'm a numpty in this field, but a reliable source described it as taking a bank of six Suzuki single cylinder engines and strapping them together. In the long run there is no reason to fear the Speed 6. I'm still slumming it with an old V8 but wouldn't have any hesitation in taking the plunge with an S6. There are plenty of good news stories as well as the problems.

anonymous-user

61 months

Saturday 4th October 2003
quotequote all
You are certainly mad mate !

Engine issues:
Cam wear.
Finger followers (original batches buckled or even snapped due to parts not being able to take the strain)
Stretched valves.
Head gasket leaks.
Bad head design resulting in low oil pressure to top end.

...and thats just on my car !

Good luck though.... Hope you have a good life insurance policy!

beano500

20,854 posts

282 months

Saturday 4th October 2003
quotequote all
bandit said:
Hope you have a good life insurance policy!


...I think they have clauses for things like this...

blutusc

172 posts

254 months

Saturday 4th October 2003
quotequote all
Neil!! Where did you pick up a SP6 engine and if you don't mind me asking: how much was it? I do have a tuscan but following recent threads on here, am putting aside some cash in the event of something going pop!! Some rebuilds have cost 4-6K, so would like something to compare it to.

>> Edited by blutusc on Saturday 4th October 18:36

heightswitch

Original Poster:

6,319 posts

257 months

Monday 6th October 2003
quotequote all
I purchased my speed 6 motor complete with box. cats, ancillaries, pipes, exhaust, prop and tanks from Douglas Valley high performance breakers in Wigan (Standish)
The car had 895 miles on the clock before its owner stuffed it side on into a tree.

cost me £4000 cash.

Neil.

bobfrance

1,323 posts

274 months

Monday 6th October 2003
quotequote all
Niel,

Where abouts in Lancashire are you?
I'd love to see this beastie.

Also I'd like to make sure I'm a safe distance away when you test it!

I'm in Rochdale BTW.

Bob.

heightswitch

Original Poster:

6,319 posts

257 months

Monday 6th October 2003
quotequote all
Snap.

You will have to wait until engine is in the chassis. at the moment I am amassing parts.

I will need a tuscan owner for reference when the work gets more serious. Hopefully I will start the build just after x-mas when the current project is out of the way.

Neil.

bobfrance

1,323 posts

274 months

Monday 6th October 2003
quotequote all
Bryan Lister has a tuscan and lives fairly locally.
He's a good bloke, It may be worth you having a word with him.

Here's his profile...

www.pistonheads.com/members/showProfile.asp?memberId=4837

No nicking parts off his car mind!

ATG

21,379 posts

279 months

Monday 6th October 2003
quotequote all
Superb project! Best of luck.

The knowledge you'll build up about these engines will be much appreciated by the rest of us on these forums.

heightswitch

Original Poster:

6,319 posts

257 months

Monday 6th October 2003
quotequote all
thanks for the info.
Neil.

_DJ_

4,962 posts

261 months

Monday 6th October 2003
quotequote all
Sounds like an excellent project. If you do develop an improved speed-6, why not sell your bits/services so others can benefit (and it might even fund your project!)

richard sails

813 posts

266 months

Monday 6th October 2003
quotequote all
What a idea!

When you finish it can you bring it down to the West Lancs TVR car club meeting for us to goggle at?

If you want to contact some local Tuscan owners you could pop down to our meeting, first wednesday of the month just of M6 junction 27.