Mantula

Tyre pressures

feeds@yuku.com (nomis) — Mon, 02 Nov 2009 14:25:05 GMT

New car, lots of queries... I have just looked out the tyre pressures on the build manual for the Mantula ; 44psi on the front., 36 on the rear. I picked the car up yesterday and have just checked tyre pressures - 15 psi front and back, no wonder I have grounded several times!
Two questions.
1. Does everyone follow the 44/36psi guide? - I have never had a car that recommended such high pressures!
2. The car has adjustable shocks. Can they all be adjusted for height or is it...

Lack of cabin ventilation

feeds@yuku.com (nomis) — Sun, 01 Nov 2009 22:17:11 GMT

I picked up my Mantula coupe today and drove back in pouring rain . I expected the Marcos to steam up but the influx of steam into the cabin when I hit standing water was a bit of a surprise! The drive was enjoyable despite all this and was certainly memorable. A later outing, along the local B Roads, once the rain had subsided confirmed that the cabin has a flow of hot air through from the engine bay and the only way to drive the car is with the windows open....good job there is a sun...

Marcos for sale

feeds@yuku.com (tony261) — Sat, 24 Oct 2009 12:53:25 GMT

For sale marcos mantula 3.5 ltr V8 injection 1986 excellent condition for year,rebuilt by marcos in the last 3 years with galvanized chasis and many other new parts £9500 ovno,TEL 07967047228.

The V8 and gearbox

feeds@yuku.com (nomis) — Thu, 15 Oct 2009 18:37:57 GMT

How many miles is a V8 good for when enthusiastically driven? 150k+ ? Likewise the 5 speed gear box?

Sump clearance on V8

feeds@yuku.com (nomis) — Fri, 25 Sep 2009 14:17:57 GMT

Can anyone tell me what a Mulberry Fabrications baffled sump does and how it gives improved ground clearance. I have speed bumps on my road and am looking to buy a Mantula.......

Back on 4 wheels

feeds@yuku.com (Martyn123) — Thu, 24 Sep 2009 14:10:01 GMT

Kinda excited about it finally being back on 4 wheels, lots more photo's on www.marcosmantula.com

Regards,

Martyn...........

Steering rack/Big Toe out

feeds@yuku.com (Martyn123) — Tue, 22 Sep 2009 18:34:16 GMT

Hi,

Just put my chassis back on it's wheels (only took 18 months!) and note that the front wheels have a quite distinct toe out despite the tie rods ends being fully screwed into the rack as per the photo's and are slightly confused as to why ?.
I bought standard GT6 tie rod ends and have already thrown the old ones away to make any comparision. My only thought at present is that they may be slightly longer than the old ones and therefore effectlvely making the rack...

Heated front screen wiring

feeds@yuku.com (steviec) — Sun, 13 Sep 2009 16:01:09 GMT

Hi
Can anyone shed light on how the heated front screens are wired. had the car out the other weekend, and it started raining, and the screen misting up. I put the heated screen on, but it didn't seem to work. On checking it out this weekend, I can hear the relay clicking in when I throw the switch, but I'm not sure what conditions to expect on the wires. I've got 4 black wires that seem to be routed to the screen, 2 about 3 inches apart on each side of the screen. Any...

4 SUs?

feeds@yuku.com (purplehaze) — Mon, 24 Aug 2009 16:50:37 GMT

Of those of you that have bought Jem's new book, does anyone recognise the engine on page 103? I am pretty sure that it's in my Manula but has anyone seen a similar setup? It has 4 SUs on a boxer manifold and lots of domestic plumbing copper pipework.

Finding those elusive horses on a budget

feeds@yuku.com (dparslow) — Wed, 15 Jul 2009 15:51:23 GMT

Curborough 2009 has highlighted a couple of ongoing issues with NCM 109H which have been present since it`s first use in early 2005.

FUEL STARVATION , minor problem originally, major problem now and the ongoing quest for MORE POWER .

As the car has improved with better handling and grip through the corners, the fuel starvation when...

Failure!

feeds@yuku.com (purplehaze) — Mon, 06 Jul 2009 16:22:35 GMT

Purple haze will not be complete for Curborough this weekend. I have not been finding enough time to work on her myself, and the changes to the electrics I can't cope with anyway so dependent on the time my electrical engineer neighbour can spare. Looking pretty dire for Prescott even!

However, all is not lost. Going to post the good news elsewhere.

Power steering ?

feeds@yuku.com (marcossimon) — Thu, 25 Jun 2009 08:46:48 GMT

Is it possible to fit power steering ?

Marcos Mantula with a BMW V8

feeds@yuku.com (marcossimon) — Wed, 24 Jun 2009 16:31:16 GMT

Looking at putting a more powerful engine in as standard , think the American v8's will be to heavy so looking at euro v8's . Audi or BMW ...
Has anyone done this conversion ?

Identify a part please

feeds@yuku.com (Martyn123) — Sat, 20 Jun 2009 17:59:04 GMT

Hi,

Went to my local Triumph dealer today and bought a front wheel bearing set for my Mantula. The inner hub and stub axle etc is all usual GT6 with Girling AR5 4 pot calipers however when I showed them the disc rotor which needs replacing it was bigger than the standard GT6 disc and they confirmed it was not a triumph part.

I assume just the rotor part can be replaced as it is held on to the inner hub by 6 allen headed bolts and if somebody can tell me what it's from...

mantula 3.9 exhaust manifold???

feeds@yuku.com (jomeo69) — Thu, 18 Jun 2009 17:51:59 GMT

Has anyone had any experience buying exhaust manifolds from anyone other than Rory.
Im pretty sure the £320 they quoted for a mild steel manifold (Just the drivers side one) is a bit excessive???
If anyone has a company they could suggest maybe nearer south east would also be handy???
Cheers guys.
Joe

steering rack

feeds@yuku.com (tony261) — Thu, 04 Jun 2009 17:14:49 GMT

Hi everyone new member here,had my mantula for about 4 years or so and in that time had it stripped and rebuilt due to the dreaded rusting chassis.I love driving it but would appreciate a bit of advice,sometimes when i turn the steering it feels like its hitting a notch but not all the time would greasing the joints on the steering rack help any advice would be a great help before i do anything, thanks.

rear axle problems

feeds@yuku.com (brian coleman) — Sat, 30 May 2009 17:06:00 GMT

I had a whine from my Mantula's rear nearside wheel and ordered a new wheel bearing from Rory. The local garage fitted it about a month ago and no more whining. However, when I had it MOT'd today (at the same garage, by the same mechanic) there was oil seeping out of the drum. He reckoned that the oil seal has gone, but I have checked my exploded view of the axle in my Haynes book and it doesn't show any seals, only one between the diff and the propshaft. Mind you, my Haynes is...

Engraved door /carpet runners

feeds@yuku.com (brian coleman) — Mon, 25 May 2009 11:25:01 GMT

does anyone know where I can get the door runners with Mantula engraved on them? CF Mantula, if you are reading, you got me some before - can you still get them? The ones I have now have been scratched by the door and I'd really like new ones before August 15th

Dyno plot of NCM 109H

feeds@yuku.com (dparslow) — Wed, 13 May 2009 15:01:12 GMT

Below is an old dyno plot of before and after the fitting of the JP manifolds and exhaust on NCM 109H. It`s an old topic but the dyno plot shows the real benefit of their products.

compbrake pro4 caliper pads

feeds@yuku.com (waldflote8) — Wed, 13 May 2009 11:04:42 GMT

Hi,

I am looking for a softer pad to be used with Compbrake Pro4 caliper system ? (I understand that this is the same system which is supplied as an upgrade by MHS ?..?)

Compbrake told me that the Hawk pads which they supply were designed for this caliper and the fast road version, which I currently have is as soft as they can supply.

Anyone used another pad type ?.... MkII escort pads look very similar, but the locating pin holes would require modification....