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Lotus Europa Forums => Garage => Topic started by: Grumblebuns on Saturday,December 02, 2017, 02:02:05 PM

Title: High balance tube manifold
Post by: Grumblebuns on Saturday,December 02, 2017, 02:02:05 PM
Two years ago I spoke to a local machine shop about making copies of a high balance manifold I picked up many years ago offered on a group buy from a Europa owner and machinist from the Yahoo mail list. Due to numerous health issues suffered by the machinist and equipment breakdowns, it took this long to get the manifolds almost finished. I stopped by the shop this morning to look at the progress he made. The current delay is waiting on a $1600 circuit board for his vintage milling machine to arrive. He told me that he should be done by the first week of January on both manifolds.

I'm wondering just how much interest there is from the group on getting more manifolds made up. He's an old school machinist, no CNC machines. everything is hand measured so he will need an example on hand to measure and copy. If there is enough interest. I will hold one manifold example for the machinist to take measurements on to make customer manifolds.

I do not have the cost for a set or any pictures at this time. In January when I pick up the manifolds (fingers crossed), I'll have both. You will be dealing directly with the machine shop, I will not be involved in any way except to answer questions.

For those wondering of any advantage of the high balance manifold as compared to stock, probably, none to minimal. perhaps just better drivability. What it does is to clean up the intake manifold. It eliminates the secondary butterfly and the ports for the crossover tubes making for a cleaner appearance of the engine. I believe that the non federal Stromberg equipped cars had a similar setup.

Joji Tokumoto
Fallbrook, Ca   
Title: Re: High balance manifold
Post by: Roger on Sunday,December 03, 2017, 04:27:51 AM
Joji, I don't think there were any non-Federal Stromberg-equipped Europas.
There were, however, a lot of Stromberg-equipped non-Federal Elans, from one of which I got my high-level manifolds, an S4 to be precise.
There were some low-level manifolds too, they were changed because of fears of fuel pooling in the balance pipe.
Title: Re: High balance manifold
Post by: Grumblebuns on Sunday,December 03, 2017, 06:10:31 AM
Roger, I forgot about the Elans, do you have any pictures of your high balance manifold. I'd like to see if the one off the Elan was the original source for the one I have.
Title: Re: High balance tube manifold
Post by: Roger on Sunday,December 03, 2017, 02:50:31 PM
Here you are Joji.
Title: Re: High balance tube manifold
Post by: Grumblebuns on Monday,December 04, 2017, 06:35:36 AM
Thanks for the Roger. Never seen a stock HBT manifold before was curious to see what it looked like. I like your solution to the elimination of the attachment point of the throttle cable with the HBT manifold using the angle aluminum on the valve cover. 
Title: Re: High balance tube manifold
Post by: Bainford on Tuesday,December 05, 2017, 11:24:00 AM
I have an interest in one of the high level manifolds, pending price. I have been keeping an eye out for an affordable factory unit for awhile, but this might be the way to go.
Title: Re: High balance tube manifold
Post by: Grumblebuns on Wednesday,December 06, 2017, 01:22:03 PM
Trevor, I'll update the thread when I pick up the manifolds next month.