Combination of technical discussions http://sideways-technologies.co.uk/forums Wed, 16 May 2012 14:42:46 +0000 10 http://sideways-technologies.co.uk/forums/index.php/topic/6135-sourcing-temp-sender-and-boss/ I've just dropped my radiator in for a re-core and realised it's the ideal time to fit a modern temp sender so Megajolt can control the fan, rather than relying on something shoved in to one of the pipes.

Anyone know where I can get a sender and mounting boss - scrap isn't really an option as property prices mean every scrap dealer near me is now a block of flats

Cheers.]]> Wed, 16 May 2012 14:42:46 +0000 http://sideways-technologies.co.uk/forums/index.php/topic/6135-sourcing-temp-sender-and-boss/ http://sideways-technologies.co.uk/forums/index.php/topic/6133-adjustment-of-dhla-pump-mechanism/
However, I'm wondering whether one pump is starting to operate before the other, and if it might be causing my problem - the engine runs smoothly at a constant 1800 - 2000 rpm, the hesitation only starts when I accelerate.

The Des Hamill bible says thou shalt not adjust thy pump strokes, but I've fitted an overhaul kit which included new diaphragms, so surely after this some adjustment may be needed? Should there be any free play between the end of the pump actuator arm, and the brass plunger attached to the diaphragm? Or should it be resting against it under non-accelerating conditions?

Thanks for your thoughts...]]> Tue, 15 May 2012 18:46:44 +0000 http://sideways-technologies.co.uk/forums/index.php/topic/6133-adjustment-of-dhla-pump-mechanism/ http://sideways-technologies.co.uk/forums/index.php/topic/6132-e-type-jag-install/

Really greasy dirty pics here:
http://s206.photobucket.com/albums/bb46/GT6Steve/Jag%20Megajolt/


Hey, it's a daily driver!!!!]]> Mon, 14 May 2012 00:25:21 +0000 http://sideways-technologies.co.uk/forums/index.php/topic/6132-e-type-jag-install/ http://sideways-technologies.co.uk/forums/index.php/topic/6131-aaaaaaaaargh-asiasifbhf0asdf7asf/
Aside from the polybushing (which only took ages as I didn't realise the outer metal sleeve from the original bush needed removing), nothing seems to have worked.

The 1/2" lowering block was machined as such that it wouldn't fit in the diff, so the edges had to be ground back. Then it turned out the center locating hole wasn't quite the right diameter, so had to be drilled out with a 1/2" drill bit. One of the stud holes wasn't quite right so had to be slightly modified.

The worst part however is I can't get the bloody spring back in, even without the lowering block - the thing drops in nicely with the shear pin locating now whether the lowering block is in or not, but I can't get the studs in. Whatever orientation I put the spring clamp plates in, the holes never seem to line up. I can't even get the studs in while it's hovering slightly above, to then tighten the whole thing down.

I could probably do it without the clamp plate on, but then the through bolt would be impossible to get on once the spring is on the diff. I can't believe this thing ever fitted, it must have been done with the bodyshell of because its bloody impossible. Is there anything different I can do to get this car back together?

Someone please help me out here as I'm extremely fed up after having wasted an entire weekend on this!!!]]> Sun, 13 May 2012 19:46:48 +0000 http://sideways-technologies.co.uk/forums/index.php/topic/6131-aaaaaaaaargh-asiasifbhf0asdf7asf/ http://sideways-technologies.co.uk/forums/index.php/topic/6130-wheels-gt6-compomotive/ I´m absolutely pi..ed with the quality of the KN Minator (Minilite design) wheels on my cars. Its very difficult to balance them. The 5 x 13 on the Spitfire a really very bad. So changed to the 5,5 x 13 from the GT6 which werde much better, but still not very good. Leaving the 5,5 on the Spit means, new wheels for the GT6.

Has anybody experience with Compomotive i.e. CXR 1355?


Cheers
Martin]]> Fri, 11 May 2012 07:55:14 +0000 http://sideways-technologies.co.uk/forums/index.php/topic/6130-wheels-gt6-compomotive/ http://sideways-technologies.co.uk/forums/index.php/topic/6129-stag-engine-rebuild/
I discovered water in a couple of cylinders, so this weekend I will be removing the engine and having a better look to see whats needed. (Its been standing for about 7 years, so I expect trouble)

I dont want to modify anything anymore than is sensible and straightforward because all I really want is a car that I can drive about rather than one taking up space in the garage looking ill.

Just hoping that I can ask dumb questions as I go and get some decent advice.

I am armed with a 1 ton crane, the workshop manual and some spanners. Why do I feel so worried!

Thapper.]]> Thu, 10 May 2012 13:03:40 +0000 http://sideways-technologies.co.uk/forums/index.php/topic/6129-stag-engine-rebuild/ http://sideways-technologies.co.uk/forums/index.php/topic/6128-basic-dhlae-tuning-questions/
Where do I start - I still can't get my head around carbs but intend to learn - I guess the idle circuit is far too lean so the need to move onto the progression circuit? (idle jet is too small or the idle air bleed is too big?)

2.1 pinto
twin DHLAE40's
fr33 cam, BV head
32mm choke
145 main jet
120 air corrector
7772.5 tubes
54 idle jet
7850.1 tube
(not sure which jets have been drilled though)

thanks in advance

Jeremy]]> Thu, 10 May 2012 07:58:52 +0000 http://sideways-technologies.co.uk/forums/index.php/topic/6128-basic-dhlae-tuning-questions/ http://sideways-technologies.co.uk/forums/index.php/topic/6125-gt6-timing-cover/ anyone got tips on getting timing cover back on when engine in car i.e hold tension off tensioner also water pump still in car rad out bonnet on so im all contorted as you do twisting around the front cheers some one said with wire? how you strap it under tension? cheers Mon, 07 May 2012 20:04:05 +0000 http://sideways-technologies.co.uk/forums/index.php/topic/6125-gt6-timing-cover/ http://sideways-technologies.co.uk/forums/index.php/topic/6120-cam-install/ I'm currently in the midst of a rebuild with the aim of making it to a show on the 26th of this month (50 years of the spitty!)

I have a new cam to go into my mk3, and i've never done this before.

It is a "High Torque" cam from Jigsaw (made by Newman cams)

the info I have on it is:

duration= 270

lift= 435

and "install figure" =108-110 after TDC.

I've been watching videos of americans putting cams into V8 engines, but they all seem to have much more info than I do , like numbers on where the valves start opening and when they close.

I'm a bit lost as to where to start.
If i simply line up the cam the same as the original timing marks, is that how it's supposed to work?, straight in like that?
What does the install figure actually mean?

Any answers, especially pointing out anything obvious that my newbie brain hasn't grasped, will be much appreciated.
cheers,

-Jim]]> Sat, 05 May 2012 09:00:38 +0000 http://sideways-technologies.co.uk/forums/index.php/topic/6120-cam-install/ http://sideways-technologies.co.uk/forums/index.php/topic/6118-timing-chains/ Done about 200miles now on this new engine, and now that I'm getting there with the tune (which is harder than said as the vacuum advance has snapped off the dizzy)
I'm now going round the car listening for rattles or odd noises. Most pronoucned is at the front of the engine, a clatter, either at the front, or front-bottom of the engine.

Do timing chains have a 'right way round' - I'm reusing old chain which was fine and dandy in the last engine - but i was wondering if they get used to going a certain direction?

I'll be taking the chain cover off this weekend (and dropping the sump to change the oil).
Anything else that could give this clatter/tinny noise? Doesn't seem to be any play in the waterpump, and pressing the clutch up and down doesn't move the front pulley around.]]> Thu, 03 May 2012 14:56:49 +0000 http://sideways-technologies.co.uk/forums/index.php/topic/6118-timing-chains/ http://sideways-technologies.co.uk/forums/index.php/topic/6117-sequential-efi-ramblings/
For Sequential injection (Yes... I know, don't try to talk me out of it) I have so far ascertained that you need a reading from both the crank (no worries there) and the cam.

So, how would you guys go about getting a cam reading?
I see three possibilities:

1. Use the old Dizzy drive gear.
2. Use the old fuel pump's hole or rocker arm mechanism
3. yank the timing cover off and use the cam's chain gear]]> Wed, 02 May 2012 10:11:11 +0000 http://sideways-technologies.co.uk/forums/index.php/topic/6117-sequential-efi-ramblings/ http://sideways-technologies.co.uk/forums/index.php/topic/6116-wohooo-officially-megajolted/

We had had quite a bit of troubles with the bracket for the sensor. The only part of the install I had actually done on my own was locating the triggerwheel, and it appears that I put the dang thing in the most stupid place, where it would be pretty close on fouling on the belt.

Still - after a bit of fiddling and a new bracket we managed to get the sensor seated sensibly - not to close not to far, and just in the right place.

The wires were installed tidy, and everything wasready for turn of the key.


After a 20ish seconds of cranking (hadn't been started for 6 months) the engine started and settled on a very low and very stable idle. Nice

I had forgot to bring the right network cable (just brought the adaptor ) so we could not upload a map. But the limp home test mode were absolutely brilliant for just testing the install.

Now on to the fun part - find a map that suits a ported ghead, balanced engine, 1.5SU on a 1300 engine, flowing filters and 4-2-1 manifold :-)


Cheers
Nick]]> Wed, 02 May 2012 07:14:40 +0000 http://sideways-technologies.co.uk/forums/index.php/topic/6116-wohooo-officially-megajolted/ http://sideways-technologies.co.uk/forums/index.php/topic/6114-su-hs4-on-a-gt6-mk2/
I ran across a gt6 today that suffered some carbproblems. Looking at the carbs I began to understand why.

The carbs appeared to be HS4 waxstats (waxstat would explain why the car didn't drive well untill heated properly)

The carblinkage also looked shite.

In short - the best advise I could offer was to call Andrew Turner and ask for a new set of carbs.

Now question is - what kind of carbs to get?

Stick with HS4
Revert to original Strombs (inlet manifold ís the original 308671 stromb manifold)
Get some HS6

It is a cable driven accelerator setup, and the owner is more the kind of plug and play type.

Does the holes on a HS4 match the manifold at all?


Cheers
Nick]]> Sun, 29 Apr 2012 20:15:51 +0000 http://sideways-technologies.co.uk/forums/index.php/topic/6114-su-hs4-on-a-gt6-mk2/ http://sideways-technologies.co.uk/forums/index.php/topic/6112-chain-tensioners/
So, I'm looking at this…

[url="http://www.jigsawracingservices.co.uk/engines.Duplex.jpg"]engines.Duplex.jpg[/url]

And while perusing the internetz looking at timing tensioners like the Healey 3000 that uses the exact same chain as a Triumph randomly happen across this… A small block Mopar tensioner

[url="http://www.hughesengines.com/Upload/Images/hug6450a.jpg"]hug6450a.jpg[/url]

[url="http://ep.yimg.com/ca/I/chucker54_2209_113250124"]chucker54_2209_113250124[/url]


Certainly seems to have enough potential to waste a speculative $40 next time the boy is Stateside

Opinions?]]> Sat, 28 Apr 2012 19:45:29 +0000 http://sideways-technologies.co.uk/forums/index.php/topic/6112-chain-tensioners/ http://sideways-technologies.co.uk/forums/index.php/topic/6109-ebc4871-springs/
Oh well. ]]> Wed, 25 Apr 2012 15:58:38 +0000 http://sideways-technologies.co.uk/forums/index.php/topic/6109-ebc4871-springs/ http://sideways-technologies.co.uk/forums/index.php/topic/6092-nos-vp2s/
Cheers

Andy]]> Mon, 16 Apr 2012 13:50:51 +0000 http://sideways-technologies.co.uk/forums/index.php/topic/6092-nos-vp2s/ http://sideways-technologies.co.uk/forums/index.php/topic/6089-dhla-pump-volume/ I drive a modified - midly tuned Alfetta GTV 2,0.there is no result with my DHLA L Carbs,
So i have decided to overhaul a set of DHLA E. I have changed all wearing parts but there is a problems with the accelerator pump. At the carburetors is a difference between the two channels in the delivery. One time on the left barrel 9 cc- right barrel 7,3 cc. Then left and right barrel 8cc, GOOD! Testing once more- right approx 9cc, left 6,5 cc. And so on.
Pump weight, pump jet ball bearing, pump diaphragm, diaphragm spring, pump rod spring, been changed. All new parts from Eurocarb, NO junk.
What happens ?

With Regards]]> Thu, 12 Apr 2012 18:20:37 +0000 http://sideways-technologies.co.uk/forums/index.php/topic/6089-dhla-pump-volume/ http://sideways-technologies.co.uk/forums/index.php/topic/6088-smart-roadster-engine-in-spitfire/
SMART ROADSTER 700cc turbo three cylinder engine in a spitfire. I really like these little engines. They are nice but i would want a different gearbox. Does anyone know what gearbox would bolt up and has anyone used these engines for another car?

The spit is lighter than the roadster and a reliable 115bhp is possible from these engines. The brabus version goes to 120 bhp reliably but i think would cost too much. Its just a thought but what do people think.

Cheers Chris.]]> Thu, 12 Apr 2012 14:14:49 +0000 http://sideways-technologies.co.uk/forums/index.php/topic/6088-smart-roadster-engine-in-spitfire/ http://sideways-technologies.co.uk/forums/index.php/topic/6084-megajolt-temperature-correction/
I used the Classic Mini's 5/8 UNF" 2-pin temperature sensor fitted to multipoint injection models. It directly replaces the old temp gauge sender in the water pump housing without modification, didn't even need the dowty washer I got for it as it seems to have self sealed. You'll need to fit the old temp sender somewhere else if you still want to use it, I fitted mine in a Stanpart stat housing with a 5/8" UNF hole but the gauge behaves very differently after the thermostat now, coming on way later (obviously as the stat is shut) and is a bit less stable.

For calibration I used the Ford sensor map that's in the Autosport labs forum, but the figures are way off for the Rover/Mini sensor. Cold water shows up as 89C and running temp is 225C (I'm running an 88C stat). I'll work on getting the sensor calibrated so the readings are more meaningful, as then I can get a nice little datalog of running temperature as well which will be great.

Here's the advance correction as it is now:

1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10
Bins 60-80-130-170-200-225-233-240-248-254
Corr 4-3-2-1-0-0-(-1)-(-2)-(-3)-(-4)


I've attached a printscreen as well of the correction table. There's no science or that much thought behind these values, but they seem to work well with the map I'm currently running.

Apologies that this is a bit out of sequence, I should be describing the Megajolt installation first but I still can't find the camera with the in progress build pics I used. Figured its best to get this advance correction discussed now as it's not really covered elsewhere on the net, and for less than a tenner extra it's a huge shame not to take advantage of it if your MJ has the feature.]]> Wed, 11 Apr 2012 01:38:23 +0000 http://sideways-technologies.co.uk/forums/index.php/topic/6084-megajolt-temperature-correction/ http://sideways-technologies.co.uk/forums/index.php/topic/6083-waisted-stem-144-valves/ TT1714) for the GT6 in this size, given that they cost 4x as much?

I don't mind spending money to get performance, that's a given, but I'm not sure whether the effects of them will be greater or lesser with all the other modifications as well. Don't just want to be spending money to pad out the spec sheet, real world driving difference is what interests me so if there's any downsides would be interested to hear them too.]]> Tue, 10 Apr 2012 12:18:12 +0000 http://sideways-technologies.co.uk/forums/index.php/topic/6083-waisted-stem-144-valves/