Messages

31

For Sale/Trade/Want To Buy / Re: Hemco Upper

« on: October 28 2013, 07:15:54 PM »

Hey Steve thanks again so much for your generosity. If you have any further info, data or opinions please send them your input is valued. There is a lot of conflicting data/opinions from varying sources which is to be expected. The goal is back pressure /boost reduction and reduced knock tendencies. People celebrate running large boost numbers or lots of back pressure??? I may be able to bring some FEA tools into this. You will be the first to know about what we're doing and what we find out. When Radius and I went on this year's road trip we agreed to attempt a science based inquiry into the problem and any possible fix.

Thanks Again
Wayne Sherman

32

For Sale/Trade/Want To Buy / Re: Hemco Upper

« on: October 27 2013, 01:32:15 PM »

Steve how much do I owe you for the Hemco and shipping? I'm hoping to make a flow core from the casting and see if our suspicions are confirmed. Talking about airflow (fluid dynamics) on a board is tough.Please observe that most of the hemco users that I know of (except the Tinman) are using external engine management (xfi,bs3 etc) systems which are controlling 6 one cylinder VE and Spark tables with about a 20% positive tolerance. The gain is the back pressure reduction across the compressor hot side. In my case I have ported Champ GN1's (better plug placement in chamber for faster burn; less octane req'd; relocated larger valves for "unshrouding" and the illustrious additional heat loss through the aluminum) along with a TA61 that "radius" worked like extrude hone for both compressor and turbine (about 10% volume flow increase-it screams like an F1 turbo when asked), PTE slic with improved scoop which helps to utilize the core surface area and xfi. Other stuff is part of this but I don't have the additional time at present. The goal is an 11 sec reliable pump gas (93 octane) T Type. The backpressure reduction across the compressor gradient will get me closer to the efficiency island of a 60-1 compressor wheel.   

33

For Sale/Trade/Want To Buy / Re: Hemco Upper

« on: October 27 2013, 07:45:09 AM »

The Radius Kid and I spent about 3 hrs talking with Red A. about "stuff". The Hemco came up in conversation. He basically drops the "F" bomb on the power plate. He uses the stock appearing hemco in his tse car. He was showing John and I around. There appeared to be no spacer.Red's car went 9.17 @ 148. An interesting tidbit, on cyls 1 thru 4 1.65 rockers, cyls 5 & 6 1.6. Several others are running a Hemco as well. Some have external engine management (XFI for example) or use XFI to alter their calibration. Red's guys use XFI to alter a file and then load the VE and spark tables in a chip. Dave Poppe is one of those. He goes nines. My goal is to run well on pump gas??? I have ported GN1's and a new engine on the stand.     

34

For Sale/Trade/Want To Buy / Re: Hemco Upper

« on: October 26 2013, 11:27:22 PM »

Steve any data/imfo that you have usually has value.

35

For Sale/Trade/Want To Buy / Re: Hemco Upper

« on: October 26 2013, 04:00:38 PM »

Hey Steve thanks for looking whether you find it or not.

Wayne

36

For Sale/Trade/Want To Buy / Re: Hemco Upper

« on: October 26 2013, 03:46:06 PM »

Earl the power plate creates a significant and unecessary back pressure (2 to 3 psi) across the compressor. The Hemco (properly prepared will distribute air evenly without the back pressure. Several well known names in the community use them and are running 9's with their street cars. Are you still re working GM front covers?? 

37

For Sale/Trade/Want To Buy / Re: Hemco Upper

« on: October 26 2013, 03:36:00 PM »

Steve if you serious about sending me one my address is

WAYNE SHERMAN
27436 POND DR.
NEW HUDSON MICH.
48165

38

For Sale/Trade/Want To Buy / Hemco Upper

« on: October 25 2013, 11:34:20 PM »

WTB

39

General Buick Tech / Cam Thrust Shims

« on: August 04 2013, 10:51:08 PM »

Where cam a person get a 0.005 or a 0.015 cam button shim?

40

General Buick Tech / Re: TA Front Cover

« on: July 27 2013, 03:35:01 PM »

Earl the rough cast part (from China) give them lots of room to tighten the impeller to wall clearance. The pocket finish texture is finer than oe like a hone. No burrs on the impellers, no shaft wobble on the drive impeller.Looks like all the correct edges are broken and radiused. I would need a CFD program and model to see if their pocket porting is better than yours.The plate is correct, thicker than what I used to use and cleaner up with the impeller oiler slot.Thanks for offerring help as needed.

41

General Buick Tech / Re: TA Front Cover

« on: July 24 2013, 11:56:14 PM »

This new TA cover is coming apart to be cleaned and repacked.What jumped out at you that was obviously wrong with the TA cover in terms of hydraulics?. I have a feeling I'll be doing more than I thought.I'm just not happy about paying over $600 for this cover,then paying $60 to repair the crack and finally having to check clearances and the work done. The cover is a Chinese die cast thats machined here. The grade of aluminum is not great either.

42

General Buick Tech / Re: TA Front Cover

« on: July 23 2013, 11:30:33 PM »

The only reason I got one of these covers was because of pocket to gear clearance. You clean the pocket up with light paper to eliminate the high spots but you increase the clearance between the pocket wall and the impeller. I had the thing welded up but now I have to tear it apart due to weld flux and debris. I had a conversation with M.T. at TA and learned a number of things about those covers. I'm not impressed with the results from this cover before the casting fracture.

43

General Buick Tech / TA Front Cover

« on: July 22 2013, 10:30:42 PM »

I purchased a front cover from TA since I was looking for close impeller to oil pump pocket clearance (this clearance carries the most weight in terms of oil efficiency). I was setting up my roller cam thrust button clearance and after multiple on off cycles of the front cover I notice a crack in the cover. It's the passenger side water pump port (the bolt that hangs out like a peer). Anyone have this occurance before. Bolt torques were around 38-40nm. Looks like a tig weld job on an expensive front cover. The ear is  not broken off but I'm looking at longevity and thermal cycling. Any feed back is appreciated.   

44

IHADAV8 Playground / Dream Cruise

« on: August 16 2012, 04:24:44 PM »

TTipe & Radius Kid hanging around Motown.Racing not likely since the street was packed and some cops.We had 45 Turbo Regals on station last night.I even got to sit in a real 68 Hurst Hemi Dart (1 of 52 made-1 of 14 stick cars). 

45

IHADAV8 Playground / Re: Happy Birthday Radius Kid!

« on: August 12 2012, 12:10:27 AM »

How many times do I have to tell you HAPPY BIRTHDAY!!!     Happy Birthday again John.