Big Wedge - Question & Stuff.

[TaSmania]

Got the SEAc running at last. Used it for the first time the weekend before Mania to check all leaks fixed. Used at Mania - ran well except exhaust clamp coming loose - fixed now and used to go to the local club gathering last night.
Question:
* It bounces around at the back and it seems v.soft - where can I get sensibly priced adjustable platform Spax to suit?
* Is the exhaust on the SEAC different to other big Wedges as it seems louder than my other/past Wedges or is it just due to the state of tune?
* Anyone else got a draft problem from under there door. On the drivers side it's such a big draft I'm sure Helen Hunt & Bill Paxman will want to survey it.
* Car is driven at an average pace except the odd accel. Yet the tank that included the two runs at Bruntigthorpe delivered only 11mpg
Thoughts - clean ones please.
GB

[2 sheds]

For Shocks, CastleSport, RT or Penisula.
The Exhaust on the SEAC is different, exit on silencer is straight and twin pipes run under the axle ( other big wedges it goes over as a single.
11 mpg is low unless you're "caning it"
Tim

[jamesk]

Probably worth a trip to the rolling road guru Mr. Adams.

I think I'd go out of interest with an SEAC regardless of any actual issues

[rev-erend]

Yes - I get that draught from the doors too ...
don't know if it's door alignment or the rubber
seals..

It's great in the summer but really bad in the winter.

I get > 20 mpg on a run and don't look if I'm really
canning it !

[TaSmania]

Last tank was better as I would estimate 20 in general use mode (as I tend only to accel then mosey along as there's too many camera's on the open roads) - the 11 mpg tank took in the two runway blats at Mania. The car hit 130 vvvv quickly then took about 1-3/4 miles to get to 140 (hood down vvvv hot day)since the latter was full load WOT it was probably like having a bucket with holes in for fuelling. When I get the pennies I'll call Mark for a tune up (on the car). Thanks for the info on the shocks Tim.
GB

[Nacnud]

Yup - I get the draught as well.
It's really noticable with the lid on and the passenger window open a crack.

Never measured my MPG. Two reasons:
- no trip meter and I can't be bothered writing down the mileage when I fill up.
- I might not like the answer!

[njhucker]

Only draught I get on my 350 is around the interior door handles, and then only in the winter.
If you want to experience a draught, borrow a Taimar with a sun roof. The lift is so much, that as soon as you open the sun roof you get blasted with air from around the doors, out of the air vents, and the heater blasts yr legs. Shut the sun roof and it all goes away.Wedges might be big bad and bawdy, but compared to some cars they are sophisticated.

[jmorgan]

11 mpg? good that Mines in the region of 15 on a good day. Give it what for and thats out the window.

[HarryW]

TaSmania said:

................ The car hit 130 vvvv quickly then took about 1-3/4 miles to get to 140 (hood down vvvv hot day).............. GB

Glad it was not just me then, not that the V8S hits 130 quite as quick as the SEAC . Did you find the run down to the first corner was almost as quick, would have been quiet happy to turn round and come back from there myself .

Loved seeing the SEAC on the day, shame the racing one didn't have a blat, but I was told it was only geared to 137mph so it was a pointless for it, having to staying at max rpm for the remaining 1.9 miles of the runway .

Harry

PS gunning it I would have thought 11mpg is good, even my hotwire will get down to single figures if prevoked.

[TaSmania]

Back to the exhaust. Mine has the same down pipe and silencer set up as my 400, had, but the tail pipe kicks out and over the right hand (Offside) rear suspension and out the back. Is this the same as anyone elses SEAC or 400-450? I have a spare stainless 400 centre box thus if I fit this with a 400 tail end (LH/Near side over axle and across the back) arrangement will this affect the performance, the calibration and will it reduce the noise to 400 levels which would be desireable?? (probably for next year when it'll get used more!!).

Harry: Best bit of sprint was the first bit - however due to the rear dampers (as I now understand it) the two right handers were interesting as the car was a tad wallowey though exit speed from turn two was around the 90 mark which enabled the quick jump to 130.
GB

[Nacnud]

SEAC exhausts - the floor of the boot has been flattened and does not allow the 'over the halfshaft' route. Hence the 'under the diff cradle' route that plagues SEAC ground clearance.

A fiar number of SEs seem to follow the SEAC exhaust route, but I think that is out of preference/conveniance rather than necessity.

[TaSmania]

More bizarre than a very bizarre thing as mine goes over the OSR shaft iLo the 400 style NSR shaft hopping or the 450 SEAC under the diff route, yet it has the flat floored boot. Humm - is this another TVR ism, i.e. it changed during the model build. I guess a 420SEAC might be different to a 450SEAC. Does anyone sell a system for the SEAC?
GB

[big wedge]

I got a full stainless steel system for my 450 SEAC a few years back from Wedge Automotive (RT Racing now). It fitted fine, although there was the usual amount of "persuasion" required in places...
Oh yes, for the record it follows the under the diff route.

[thegamekeeper]

I've got a jig for underaxle seac systems. S/S £360 +vat

[TaSmania]

Steve,
Is the £360 for the system from the downpipes rearwards?
GB
PS: What's the ground clearance like i.e. does it drop lower than the centre box?

>> Edited by TaSmania on Saturday 16th August 16:05

[thegamekeeper]

Gary yes from the manifolds back. It is a few years since we made one so I would need to get the jig out to see how low it is under the axle but it is IDENTICAL to the factory original except it is stainless and can obviously be made as noisy or as quiet as you like. There are no noise emmisions on cars of this age but be aware that noisy cars attract the attention of both people who like noisy cars and those who dont(some of whom wear uniforms and were born out of wedlock). I used to find that the noise could get wearing on a long journey, and also be aware that trackday noise levels are getting more stringent

[Nacnud]

thegamekeeper said:

... and also be aware that trackday noise levels are getting more stringent

I suspect that getting a SEAC to meet current trackday noise levels with a 'standard' SEAC exhaust is going to be virtually impossible. There's just too many dBs for a bolt-on silencer to reduce.

Hopefully Steve will post here soon and tell us how he has managed it on his 520!

[2 sheds]

TaSmania said:

More bizarre than a very bizarre thing as mine goes over the OSR shaft iLo the 400 style NSR shaft hopping or the 450 SEAC under the diff route, yet it has the flat floored boot. Humm - is this another TVR ism, i.e. it changed during the model build. I guess a 420SEAC might be different to a 450SEAC. Does anyone sell a system for the SEAC? GB

[2 sheds]

TaSmania said:

More bizarre than a very bizarre thing as mine goes over the OSR shaft iLo the 400 style NSR shaft hopping or the 450 SEAC under the diff route, yet it has the flat floored boot. Humm - is this another TVR ism, i.e. it changed during the model build. I guess a 420SEAC might be different to a 450SEAC. Does anyone sell a system for the SEAC? GB

The very early SEACs (1986) had the over axle pipe, but as yours is a later car it has probably been changed for a 400 system, in recent years.
All types are available.
Tim

[2 sheds]

Nacnud said:

thegamekeeper said: ... and also be aware that trackday noise levels are getting more stringent I suspect that getting a SEAC to meet current trackday noise levels with a 'standard' SEAC exhaust is going to be virtually impossible. There's just too many dBs for a bolt-on silencer to reduce. Hopefully Steve will post here soon and tell us how he has managed it on his 520!

I have in the past produced a tail silencer that reduces a 110 dba SEAC to under 98dba, it was bloody ugly though ..
Tim