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Rich... Your fuel pressure setting is correct. There is some falling off in pressure between pump and carb. I've been using low pressure (2.5-4.0) Facets for many moons now with stock float valves...no problems. Same with previous Vizardized Series A with 90hp to rear wheels and Weber "45" except pump was Facet 6psi or so through 2.5 pressure regulator. Stock float valves in this case also. No problems. What pressure does your pump initially put out? What "color" would appear on a NEW set of spark plugs on your car after a hard run, preferably up a reasonably sloped... MORE
should have said "rear carb wouldn't stay full even at idle" "Richard Rivenbark" 32614... MORE
I thought 1.5-2 psi was optimal for the SUs and anything more would be a problem (of course every car has its own quirks). I have my regulator set around 2 psi (WAG). However by my seat of the pants I have a funny feeling that during high speed extended runs it "feels" like it stumbles just a bit. I haven't tried bumping up the pressure just yet. I am thinking fuel starvation due to slightly to pressure being a bit low. When I first installed and set the regulator it was way too low and the rear carb... MORE
Don't know if this has been mentioned yet, but older grosse jets worked quite well. However, newer ones for some reason don't stand up to their reputation.I tossed three of them from my triple-carbed big Healey when I found the "two balls" were sticking and not shutting off the fuel flow. Rick HealeyRic2@... 32607... MORE
FWIW, When I was working on my SU's, I was going to go to the Grose jets, and my supplier, FASPEC, told me to stay with the standard as there were many complaints about the Grose jets and while he sold them, he wouldn't recommend them. Bob, Troutdale, OR "Robert Webb" 32604... MORE
Martyn... The SU pump pressure is pre-set (though it may be adjustable...I dunno!:) and comes "fully compatible" for SU carbs. This having been said, it's possible to get a "bad" new part....a "lemon", if you will. Test it with a fuel pressure gauge. If it's putting out more than 3.5-4.0 psi, it's got a problem. Cap'n. Bob '60 :{) PilotRob@... 32601... MORE
"Has anyone encountered this?" Yes, Martin...Glen Burns on the autox spridget list encountered exactly this problem..hairline crack(s) in the metal holding the jet...subject of a post of his of about two weeks ago I think. Cap'n. Bob '60 :{) PilotRob@... 32600... MORE
The fuel pump is a new SU one so I would assume that it is set for SU carbs. Is the pressure adjustable or do I have to use an external regulator?. The needles hold pressure until the engine is started and the it starts overflowing. I've order some standard jets to replace the Grose ones. Martyn meastwood1@... 32599... MORE
t correct rd jets mk2sprite@... 32581... MORE
I'm installing Grose jets into my HS2s and if I set the float to the right height per the manual I get fuel dumping from the bowl vent. What is the correct height to shim the Grose jet to? I've never had a problem with the standard jets before. Martyn "Martyn Eastwood" 32558... MORE
Shane, They are supposed to just go on the inlet valve stems. These are the only ones that the pistons are descending on when the valve is open, causing them to suck oil down the guides. On the exhaust valves this, in theory dosn't happen. However on mine it was burning too much oil until I fitted oil seals on the exhaust ones as well. Possibly because of wider tollerance using unleaded fuel valve guides, or maybe because of the cam I was using. Actually I suspect oil was being drawn down the stem and then burning directly in... MORE
I don't know if yours is the same as in my 62 but my unit is sitting in front of me now and it goes from 20 to 100 ohms. (Fluke DVM) This is measured from as low as the float goes to the highest resistance reading at the top of its movement. Nelson "Nelson Wittstock" 32466... MORE
Well, I thought I had a local buyer for my Sprite, but it seems to not have worked out. I thought I would check the list and see if I can get an opinion on what it might be worth. Itsa: 1969 Sprite(clear Texas title says 1964, but a typo must have occurred way back before I purchased it in New Mexico about 3 or 4 years ago) Number plate (beneath carbs) matches vin on title. You may recall: It's stuck in first gear. Crap!! Stuff I have done: Porsche 914 Seats Roll bar Tonneau cover adapted (lots of... MORE
Brad, my rebuilt 1275 smoked blue and I followed all sorts of advice from list members to get it right before I finally fixed it. Of many "cures" attemted, the two that made the most difference in my case were: 1. Replacement of the rocker shaft. Too much oil was leaking out of the rocker bushes. It was apparent by running the engine with the rocker cover off. I left the cork gasket seated on the head and let the engine run at fast tickover. It leaked so fast that it soon created a lake on the top of... MORE
Hello All. I live in Cheshire, Oregon USA and I'm the new owner of a very nice 1979 MG Midget:) I just bought it this past weekend and I can't wait to play with it. It has a couple of problems that need to be addressed before I can really drive it, one of which is a throttle that keeps sticking wide open. The other is bad brakes;) This combination of issues makes me a bit nervous! It desperately needs windshield wipers and I am having difficulty finding the little 9" wipers that are on it now. Does anyone... MORE
I'm having as problem removing the brass nut for the fuel line coming out of the tank. The tank is now off the car but the nut refuses to budge after several days of penetrating oil (Kroil) soaking. Part of the problem is that the nut is an odd size and none of my wrenches/spanners fit it properly. It is within a few thou of .600 inches and this does not match up to fractional sizes. 19/32 is as close as I can find and at that size I have only an open end wrench. I purchased my Sprite... MORE
"Maybe condensation...." Absolutely!! As previously mentioned... a normal part of start up from cold in the morning, most definitely with a car left outside overnight, and most definitely in cool, damp weather. Problem is, I'm "over here", Guy Weller is "over there" and Jens is somewhere else! So we can't see what Jens is looking at under these circumstances in terms of "extent". Is it normal, or "abe normal" (courtesy, "Young Frankenstein":) It sounds abnormal considering it happens every morning to a great extent, whether the ambient air is "dry" or "wet". The engine warms up after a couple... MORE
Blackish/Grey you say? Well ALLRIGHTY THEN, Jens...it's not oil!! :):) Oil is bluish in color and "stays" in the air. and....the exhaust definitely smells of burning oil (and not unburnt gasoline). Whitish/grey (or gray) is water which is a byproduct of combustion and along with condensation within the exhaust system is produced most abundantly when a "cold" motor (overnight sit, fr'instance) is initially fired up, most definitely on those cool, humid mornings when it tends to stay in the air rather than more immediately evaporate as it does in "drier" air. Black is definitely unburnt gasoline which we get... MORE
were the new guides pressed in and reamed to size correctly? Are they the ones for unleaded (bronze?) or steel? Were the valve stems worn or were they new, too? David "David Jacobs" 32071... MORE
You have worn valve guide on the inlets. You can replace the seals on the valve stems, but it will only make a marginal difference. The problem is that when the throttle is shut there is a vacuum in the inlet port area, created by the piston going down and nothing to go in. The inlet valves are open, but not the carb's butterflies. Hence vacuum. This pulls oil from the rocker area thru the valve guides and most of it burns on the back of the inlet valves. Once you're underway this diminishes and you are ok. Don't... MORE
Ed, All kidding aside, I'm not even sure yet that I want to replace the mechanical pump with an electric. I am going to the twin SU setup but am disgusted at losing a mechanical pump so quickly. Your opinions greatly appreciated. If electric is the way, part numbers would be great. Even after working on the little best for 5 years most of the time I'm in unfamiliar territory. Rob C Webfoot Leisure.com rob@... 866-530-9801 toll free robbiesg@... 32020... MORE
Damien, Unless you are planning on replacing the needle roller bearings in the Hardy Spicer joints, I would not attempt too dismantle them as it will be virtually impossible to do so without damaging the bearing caps or grease seals. Clean the UJs in situ, taking care not to de-grease the bearings, and then paint the tubular part of the propshaft only. Guy "Guy Weller" 31950... MORE
Some of you may remember a mail i wrote a few days agoo were i told you my float bowls went almost empty. Well i think i have found the cause of this problem as well. I changed the petrol line from the tank yesterday and when removing the old one that had a joint before the pump (mechanical) with a short piece of rubber tubing the hose clip on one end was loose and the actual rubber tubing was loose as well. I could just pull it off by hand easily. I recon the pump must have sucked... MORE
?I figured I would seek the advice of those who have been there and Never seen a single DCOE setupon any 4 cylider engine with 4 inlet ports in the head!. The A_sereis normally has only one DCOE dues to a restriction in the head design that means that each pair of cylinders shares and inlet port, the only two intel ports, and thus no real point in using two DCOE carbs. The 1500 engine does not suffer this limitaion. Triumph tume and lawerence tune in the UK will sell you a twin DCOE mainfold for this engine. However... MORE
Jens Yep! Pretty much what I've been saying, not only is the twin 1.5 SU setup better on the lower rev ranges than the DCOE, they're easier to set up and maintain, but hey no one ever listens to me ;) Where a bit of extra whooomph is needed on an uprated engine, I don't dispute the DCOE's come into a class of their own, but not on unmodified engines. "amukdigiphoto" 31938... MORE
