I recently replaced the fuel pump and although i thought i had tightened the banjo fittings enough there was a … More
Category: Fuel / Carbs
#MGB Carb Balancing
I had been running on a pair of early HIF4 carbs – AUD616 to test out the benefits of ported … More
Fuel Pump Test and Replacement
The last few drives i noticed that the engine has started stuttering a bit when accelerating. I had been planning … More
Cleaning the K&N Air Filters on an MGB
The K&N filters came already fitted to my MG so i do not know how old or how many miles … More
Checking Spark Plugs for Mixture
I had a good run in the MG during the week so thought a good time to check the plugs … More
MGB Technical Service Bulletin – Throttle Cable
A useful piece of information but will not apply to all cars. Looks like it was issued in 1973 and … More
E10 petrol and our MGs
E10 petrol and our MGs – MGB Register Forum An interesting post i found in the mgb forum about this … More
Gunsons Colortune
My old Colortune kit come in handy again to set mixture on the carbs I have recently fitted. Had the … More
Choice of Fuel for the #MGB
Most UK MGBs are standard high compression (HC) engines of 8.8:1. The above book states that fuels below 98 octane … More
HIF4 SU Carb Tuning & Servicing Download
For the full document click the link below:- https://documentcloud.adobe.com/link/track?uri=urn%3Aaaid%3Ascds%3AUS%3Ab139272f-fd52-4572-b2fb-aa75cde27f3d Just noticed that item 9 on the pic refers to the … More
MGB Carb Heatshield Insulation Pads Replacement
These insulation pads had long gone missing on my motor and possibly originally were probably asbestos!!! I found some similar … More
Tuning for performance and diagnosing faults with a vacuum gauge
I’ve set the timing on my MGB using the vacuum gauge to great effect but not used it to adjust … More
SU Type HIF Carburetter – Dismantling, Inspection, Assembly and Tuning
I am in the process of stripping down and ‘re building a couple of HIF4 carburettors – AUD616 model which … More
SU Carb Mods for Track Days
An interesting paragraph in the excellent book in the picture about tuning SU carbs for the track. It suggests to … More
SU Needle Comparison Chart
http://www.mintylamb.co.uk/suneedle/ A useful database to compare needles. I used it to check the 3 sets off needles that I have … More
Tuning the SU Carbs – upgrades4mgs
https://www.mginfo.co.uk/upgrades4mgs/Engines/tuning_the_su_carbs.html An excellent article that I am following to modify and tune a spare pair of hif4 carbs I have … More
Modifying SU Carbs
I have a spare pair of SU carbs that I have been considering modifying which this thread from TenTenths Motorsports … More
MGB Fuel Filter Location
During the first year of ownership of my MGB there were 3 instances when the car lost power as if … More
A guide to unleaded additives – Classic Car How To Guides and Articles
An interesting article about the use of unleaded fuel and classic cars. Interestingly Tesco high octane fuel comes out well … More
AUD616 SU MGB HIF4 Carburettors – with vac port.
Won these two rare carbs off eBay. They are the sort that have a vacuum port for the distributor advance … More
HIF4 carbs (AUD 616) as fitted to early rubber bumper MGBs
Parts for AUD 616 for MG M.G.B 1798 cc – SU Carburetters – SU Carburetters This is the carb that … More
SU Carbs Vac pipe take-off
SU Carbs Vac pipe take-off Where is best place to take the distributor vac advance – from the manifold or … More
For anyone who runs twin SU HIF carbs
Anyone who runs twin SU HiF carbs and finds them tough to tune should have a read of this from … More
Checking Fuel Pump Flow
I recently suspected that the fuel pump was not working correctly as there was high speed clicking – guess about … More
Old vs New Octane Ratings
Fuel System & Octane Ratings I have started using the premium fuel since re-timing my engine and finding out it … More
