Intake Spacers for 87+ 32v cars - any interest?
12-05-2006, 07:44 AM
#18
Instructor
Join Date: Apr 2006
Location: Across the BIG pond.The UK.
Posts: 170
Likes: 0
Received 1 Like
on
1 Post
For testing purposes (different thicknesses) & even for actual use you can make your own using plywood (I would suggest marine grade) or Phenolic (see below) & a jig saw.
Wood on an engine you say ? .
It has been used as carb spacers for years , now mostly superseded by phenolic
Wood carb spacer by Edelbrock
Info from a carb spacer manufacture on phenolic
"What is Phenolic?
Phenolic is a material used in the Aerospace and Electronic industry for its superior insulation properties. It has even been used by NASA during the space exploration as a heat barrier. Phenolic is made by compressing layers of resin soaked canvas while under heat. When cured, it has a brown grainy appearance which is commonly mistaken as “wood”.
Why we use it
We use Phenolic in our carb spacers and adapters to stop the transfer of heat from the engine to the fuel system. Intake manifolds and aluminum carb spacers readily transfer heat through the carburetor heating your fuel which has an adverse effect on performance. Our Phenolic spacers and adapters stops this transfer, therefor lowering the fuel temperature."
Wood on an engine you say ? .
It has been used as carb spacers for years , now mostly superseded by phenolic
Wood carb spacer by Edelbrock
Info from a carb spacer manufacture on phenolic
"What is Phenolic?
Phenolic is a material used in the Aerospace and Electronic industry for its superior insulation properties. It has even been used by NASA during the space exploration as a heat barrier. Phenolic is made by compressing layers of resin soaked canvas while under heat. When cured, it has a brown grainy appearance which is commonly mistaken as “wood”.
Why we use it
We use Phenolic in our carb spacers and adapters to stop the transfer of heat from the engine to the fuel system. Intake manifolds and aluminum carb spacers readily transfer heat through the carburetor heating your fuel which has an adverse effect on performance. Our Phenolic spacers and adapters stops this transfer, therefor lowering the fuel temperature."
12-06-2006, 06:12 AM
#19
Rennlist Member
Thread Starter
Hmm...
There seems to be a fair amount of interest then...
I am picking them tomorrow or Firday. I will post very detailed pics and the price that I paid for them. I will also do a dyno run before and after once I am back in the UK and have time...
Alex
There seems to be a fair amount of interest then...
I am picking them tomorrow or Firday. I will post very detailed pics and the price that I paid for them. I will also do a dyno run before and after once I am back in the UK and have time...
Alex
12-06-2006, 12:01 PM
#20
Rennlist Member
the reason for the spacer is for flow gains, not reducing fuel temps in the carburetor. the transient time for the fuel is pretty low and under WOT, the heat transfer of the air on the carb is pretty great. 500cfm of air flow cools thing down a bit! plus, the carb will heat up anyway. if anyone remembers, you do have 4 bolts (made of conductive steel) holding the carb to the intake manifold 
eventually, the carb will be the same temp as the intake manfold and the wood will have 0 effect. in fact, the wood heats up too! the material is just a derivative of Teflon! (like a plastic that doest melt that easy)
the key thing for the spacers on our cars is to help the flow into the intake horns in the intake chamber.
Mk
eventually, the carb will be the same temp as the intake manfold and the wood will have 0 effect. in fact, the wood heats up too! the material is just a derivative of Teflon! (like a plastic that doest melt that easy)the key thing for the spacers on our cars is to help the flow into the intake horns in the intake chamber.
Mk
Originally Posted by C.F.
For testing purposes (different thicknesses) & even for actual use you can make your own using plywood (I would suggest marine grade) or Phenolic (see below) & a jig saw.
Wood on an engine you say ? .
It has been used as carb spacers for years , now mostly superseded by phenolic
Wood carb spacer by Edelbrock
Info from a carb spacer manufacture on phenolic
"What is Phenolic?
Phenolic is a material used in the Aerospace and Electronic industry for its superior insulation properties. It has even been used by NASA during the space exploration as a heat barrier. Phenolic is made by compressing layers of resin soaked canvas while under heat. When cured, it has a brown grainy appearance which is commonly mistaken as “wood”.
Why we use it
We use Phenolic in our carb spacers and adapters to stop the transfer of heat from the engine to the fuel system. Intake manifolds and aluminum carb spacers readily transfer heat through the carburetor heating your fuel which has an adverse effect on performance. Our Phenolic spacers and adapters stops this transfer, therefor lowering the fuel temperature."
Wood on an engine you say ? .
It has been used as carb spacers for years , now mostly superseded by phenolic
Wood carb spacer by Edelbrock
Info from a carb spacer manufacture on phenolic
"What is Phenolic?
Phenolic is a material used in the Aerospace and Electronic industry for its superior insulation properties. It has even been used by NASA during the space exploration as a heat barrier. Phenolic is made by compressing layers of resin soaked canvas while under heat. When cured, it has a brown grainy appearance which is commonly mistaken as “wood”.
Why we use it
We use Phenolic in our carb spacers and adapters to stop the transfer of heat from the engine to the fuel system. Intake manifolds and aluminum carb spacers readily transfer heat through the carburetor heating your fuel which has an adverse effect on performance. Our Phenolic spacers and adapters stops this transfer, therefor lowering the fuel temperature."
12-06-2006, 12:35 PM
#21
Administrator - "Tyson"
Lifetime Rennlist
Member
Lifetime Rennlist
Member
Originally Posted by aggravation
So if you have a supercharger installed would these be of any help?
Todd has mentioned he is concerned the four outer horns might be getting starved for air since they are so close to the edge of the intake. Air cannot totally get around that horn. Like the four in the middle. Spacers will help with this to allow more air to swirl around the outer horns.
One challenge in making these (if I remember what Todd said) these intakes are not perfectly flat on the side so the spacer needs to be concaved a bit, makes it a bit harder to form.
Todd’s mind is circling around a new custom intake with very short runners for N/A car and another design that will incorporate a huge intercooler core. Something less complicated or expensive than ITB’s. I’m just hoping whatever he comes up with I can somehow modify for the 16V head.
12-06-2006, 12:51 PM
#22
Drifting
928 developments has a carbon fiber intake for stock 16 and 32 valve engines that marc anderson I think has used on his development car and I have read at least 50 hp increase from stock with larger gen 3 injectors. I have spoken to phil threshie and His organization seems to be developing alot of goodies for our cars. Don't know much about the much written about devek as their site is still down.
12-06-2006, 12:53 PM
#23
Burning Brakes
Join Date: Sep 2006
Location: Myrtle Beach, South Carolina
Posts: 1,203
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Hacker-Pschorr
Todd’s mind is circling around a new custom intake with very short runners for N/A car and another design that will incorporate a huge intercooler core. Something less complicated or expensive than ITB’s. ....
12-06-2006, 03:10 PM
#24
Rennlist Member
Having built the first and a few iterations of spacers for the intake phenum spacer, I suggest first folks first try different thicknesses......my testing indicated that there was zero gain on a stock 5.0 engine regardless of modifications. In a modified 6.4, a .5" spacer had a gain of around 2%.
If replacing the intake gasket with a "high/tall" spacer, it will most likely help low end torque and hurt hp...so says theory.
Marc
If replacing the intake gasket with a "high/tall" spacer, it will most likely help low end torque and hurt hp...so says theory.
Marc
