Sevenman's TVR (was SAAB) Blog

April 10, 2012

2 trips to TVR Power

Filed under: TVR — Administrator @ 9:46 pm

Since my last update, I have been back to TVR Power twice.

Once to collect the car following the radiator / brake work, and again after the Easter weekend to have the idle speed sorted.

For the first visit – the new radiator and hoses look very nice, and the car no longer has a coolant leak.

New blue hoses and radiator

New blue hoses and radiator

The new rear AP racing pads match those fitted to the front and should have a coefficient of friction ~20% lower than the EBC Greenstuff. Hopefully this will fix the brake balance issue.

New rear pads

When starting the car to drive home it stalled after initially catching, and wouldn’t start until I gave it some throttle. I assumed that it was a little unhappy having been moved only a short distance. However, more drives over the weekend showed the same issue. I dropped Dom an e-mail on Easter Sunday evening, and got a reply almost immediately saying I should bring it in and he would get it sorted.

So I returned today, and Wayne used a diagnostic laptop to see what was going on. There was an imbalance between the two sets of cylinders (1-3 and 4-6) shown as a large difference between ‘Adaptive 1’ and ‘Adaptive 2’. He rebalanced all the throttle bodies, and then improved the lambda sensor response by creating a separate earth for them attached directly to the timing chain cover.


Big air filter

Adaptives now matched - before reset

When finished, the idle felt notably smoother than before. I will have to see what happens when I next do a cold start.

The cost of this 75 mins of work? Nothing – Even though the problem was unrelated to the work that they had done last week, Dom still have it fixed for free. And as I was discussing things to take on my planned road trip, he even threw in a 125 amp fuse as well.

I am quite happy with that :)

For more details of the work, see the 3 new pages created that are linked off the “Things we have fixed” part of my website (05/04/2012 and 10/04/2012).

April 4, 2012

Delivered to TVR Power

Filed under: TVR — Administrator @ 5:18 pm

I had arranged for the TVR to have some work done at TVR Power in Coventry.

On the list of things to fix were:

– Slow leak from radiator – to be replaced with new alloy radiator, silicone hose kit fitted
– Brake pads to be changed to try to fix brake balance issue
– Piece of trim where the front of the hood meets the bodywork (at the rear edge of the door) had come loose
– Check ride heights

The brake problems have been described in earlier posts, the trim problem is shown below. The loose bit is the rubber block in the centre.

Loose trim

The car started fine, a check of fluid levels and tyre pressures showed all was ok, and the drive to Coventry mid-afternoon was good.

On arrival at TVR Power I had a chat with Jason about what needed doing to the car and he filled in a work sheet with the job details.

Because I had a few minutes before my lift home was due, I asked Jason for a look around their facilities.

In the main work area they had some very interesting cars having work done, including a Chimera with a Speed 6 engine. They also have a Speed 12 engine that might be restored to working order.

They have a good machine shop for work on the engines, the photo below shows one view across it.

TVR Power machine shop

Since I was unsure of the exact operation of ‘finger followers’, Jason assembled some parts and a test head to demonstrate their operation.

The picture below shows a block which is being bored out for the 4.5 engine. The cylinder liners rise above the hold in the block, and have notches cut out to allow sufficient movement of the con rods.


I was then shown the engine assembly room, and some of the upgraded parts that go into their engine builds. The new pistons and con rods were much lighter than the originals, and very well made.

Original piston and con-rod on the left, new on the right

Old and new pistons and conrods

They also had an original and new crankshaft on the bench. The new crankshafts are again beautifully made. Seeing these parts helped me to understand the costs involved in the engine upgrades, and the quality of components that allow TVR Power to give a 5 year warranty on their rebuilds. When I visited they had a lot of cars in for engine upgrades / rebuilds.

Old crankshaft top, new crankshaft below

Old crankshaft

New crankshaft

The tour finished with a look at their rolling road facility, which has a large single roller (preferable IMHO to the dual roller setup).

Thanks to Jason for the tour round their facilities, and I feel my car is in safe hands when getting done here.

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