Steves tam project

[Don1]

Good luck on using the rear box - mine ended up getting so hot it melted the numberplate...

[SteveSPG]

Don1 said:

Good luck on using the rear box - mine ended up getting so hot it melted the numberplate...

hmmm...ive a stock tamora and an aftermarket (act/jp or some such) big bore rear box....hope the latter will work out, but if not, plenty room for something else. its definately louder than a stock rear, so assume it is free flowing

[fatbutt]

I now see what you mean about space for the exhaust around the chassis. Funnily enough its the steering column that's screwing my exhaust system route so I've gone the unique header route instead or revising the steering (it looked the easier job!).

I love these projects; start with 'why the hell not?', and just crack on. All power to your elbow

[SteveSPG]

spartridge said:

I am guessing that will sound quite nice...

well it will be once i've got the cam to fit....piston to valve clearance currently 35 thou.........just a tad too close for comfort. will need some slightly thicker gaskets in to give me 60 thou or so...

[Walford]

fel-pro

[SteveSPG]

Or comotec.

[SteveSPG]

new gaskets finally arrived, now have an acceptable .070 inch clearance, so finished putting the rest of the engine back together.

[Slow M]

What is the additional .035 doing to quench?

Best,
B.

[SteveSPG]

Slow M said:

What is the additional .035 doing to quench?

Best,
B.

additional gasket thickness is .019, from .051 stock clearance ptv is increased as the rocker ratio is 1.8, so additional clearance ptv is .035. quench distance is now .060 which is ok given that the valves are lighter, springs stronger, and retainers titanium, so can spin the motor higher with better control, from a stock 6500 to 7200.

spent time discussing the gasket vs cutting pockets in valves vs new pistons and CR quench etc with engine builder before i opted for this route. view is that the effect will be immaterial on a engine destined for road use, as long as mapping is correct to control detonation.

Edited by SteveSPG on Wednesday 25th September 10:47

[Walford]

SteveSPG said:

given that the valves are lighter, springs stronger, and retainers titanium, so can spin the motor higher with better control, from a stock 6500 to 7200.

have you change the con rods

[SteveSPG]

Walford said:

have you change the con rods

rods no, bolts yes

its always the bolts that break....rarely see a rod go unless youre doing something stupid.

[SteveSPG]

really not done much to tam over the last few weeks, but did recall, as winter is fast approaching, that I fitted heated seats to one of my cobras, which made for pleasant driving with the roof off on crisp mornings, so have removed the tam seats and sent them off to dave the trimmer to have some heated seat pads installed.

also finished off the engine bay bulkhead insulation yesterday.

I do keep looking at the chassis, and though it is in good condition, wonder if i should pull the chassis for a refresh while the engine is out, or leave that till next winter, and just focus on the engine/gearbox/exhaust this winter.....

[Don1]

Personally... I would make sure everything is 'right' in one hit. I'm currently really fighting with my starter motor (still), so this may be frustration talking...

[SteveSPG]

Don1 said:

Personally... I would make sure everything is 'right' in one hit. I'm currently really fighting with my starter motor (still), so this may be frustration talking...

heat soak? often an issue with starters with headers vv close,

[Don1]

Heat soak killed it, have had it rebuilt, now having lots of problems getting it working again. When that's sorted, I do have a thermal blanket for it, and I'm thinking about wrapping the headers at the same time.

[BuzzBillsberry]

Don1 said:

Personally... I would make sure everything is 'right' in one hit.

Agreed. Do it now and get it out of the way. I'm doing a full 'C' check on the Tamora this year a part from the engine as its a brand new 4.3. So it's body off.the chassis is fine but I want to give it a good clean plus up date and renew the heat shielding and improve heat reflection round the cats and wrap the exhaust plus re bush thro' out

Buzz

Edited by BuzzBillsberry on Tuesday 8th October 19:01

Edited by BuzzBillsberry on Tuesday 8th October 19:03

[flyingdutchie]

Don1, how are you? I read that you are planning quite some modifications (GM ECU, 6 speed gearbox etc). Does this mean that your convertor's setup did not work?

[Don1]

I'm well my friend, yourself?

With my conversion, I would say that I got the best of the bunch (that I have seen), but having seen and experienced others that were either built, or finished by 3rd parties, that I want mine finished to that degree. You get what you pay for really. Mind you, I'm currently knocking all modifying on the head, so we'll see in a year or two (or when it really breaks!).

[samnorthy]

Miss post

Edited by samnorthy on Friday 11th October 11:37

[SteveSPG]

finally fitted the tam engine bay heat shield last weekend.