Nicks Forte Scratch Build - to Stunning Mk1 GTD

[Randy V]

Sounds really good Nick! Unless your tail pipes are clear of the fiberglass - Be really careful running it too long with the rear clip open.. More than one person’s created a problem with the heat..
Also, you may need to just slightly alter the synchronization of the throttle on the new carb in order to increase the airflow on it. I’ve found that mixture adjustments have very little impact on that.

 

[JP Verweij]

... synchronization of the throttle on the new carb in order to increase the airflow on it. I’ve found that mixture adjustments have very little impact on that.

Mixture screws have no impact on syncronisation of the carbs at all. Mixture srews alter the by pass system below the throttle blades and has no influence on throttle blades.
Best way to sync carbs is raise idle to 1200-1500 so all linkage is out of play. Then use two vacuum sync gauges to set the linkage in sync. Test thevtwo gauges on the same carb first to see if the gauges read equal.

 

[Randy V]

Mixture screws have no impact on syncronisation of the carbs at all. Mixture srews alter the by pass system below the throttle blades and has no influence on throttle blades.
Best way to sync carbs is raise idle to 1200-1500 so all linkage is out of play. Then use two vacuum sync gauges to set the linkage in sync. Test thevtwo gauges on the same carb first to see if the gauges read equal.

I think that you’ll agree that changing the fuel mixture will usually alter the idle quality and RPM, thereby making a slight change in airflow. This is what I was referring to.

 

[NickD]

Hi Everyone,
As a part of the ongoing development of the car, I've made another change since moving over to the Weber IDF's.

After speaking to a few people I decided to add some inlet manifold air bleed lines to the header tank. My Weber inlet manifold does not have any channel (just blocked) for the water ways at the back of the manifold which are often present on other manifold.
Hence, to stop the accumulation of air and subsequent lack of cooling at the back of the block, at least the air can bleed off. Will probably result in a little water circulation that was not originally catered for but every little helps.

I drilled and tapped the manifold before it was put on the car in prep for this mod.

As suggested by Frank Catt, will drop the lines down to something like Dash 3 in time but for now just using what was to hand and test Today as essentially getting everything ready for the Le Mans Classic now.

Nick.

 

[NickD]

A long time since my last upload as been doing a little tweaking with the car and getting her more to my liking with the 44 IDF's. In has gone electronic ignition to replace the dual points set up. Been playing with the Dizzy advance and the carb balance etc. etc. Now she starts well, has a lovely idle when both hot and cold and both drives and sounds great. Plugs don't carbon up and all look the same after various test runs. All in all, a happy man.

A quick video below, last weekends run out just to check all's ok.

https://youtu.be/umYBgObv47o