."System8 0p -Y@Times New Roman- Y2 a4Testing of the B5 S4 Intake Manifold Phenolic SpaceroJA8.]T)S8*7]J)oT*\T*@]7T]J)S].8T.\*f]I]T..J*]\TJJJ 2 JsbA@Times New Roman- 2  b,@Cambria- 2 , b;-2 5, HypothesisH5<9%<5..@Cambria-2 5/V: Vendor claims for phenolic spacers designed for the B5 S4 2.7T motor are correct. <1875),1S+5)87185,+81,0)+71+18176)"71=73777;S5"6)1)1,5))1-" 2 5; b: 2 , b; 2 ,These include:;71+18,771 2  b< 2 , b;-2 1)7'@"Arial- 2   b8-2 XPrevento9)1218"2 S heat conductivity to the intake manifold from the cylinder head. (034 Motorsports).711",5877,"2"2"5"718"141S1857)5S"71-2871)7127&777R5"5)+85)"+& 2  b< 2 X b;-2 2)7'- 2   b8-2 X_The intake manifold will be insulated from heat conduction through the heads, leading to lower ;718"141S1857M718+71"17)5S711",5877,"58"7)5727"817117+11781"55M1)%2 iXintake air temps 8"1411)"1S8+ 2 i%-b!b2 iF: extends the intake runner lengths for better low end torq10"177+"718"141)7881)181"7+5)71""1)5M187"5)7+2 iue. Expect a minimum 71:081,"1S8R7S2 Xof 557 2 -b!C2 %10hp at the crank. (VAST Performance)87781""71,)184&<>2;91)5*S18,1& 2   b; 2 T, b;-2 3)7'- 2   b8-2 X\Proven to reduce intake air temps as much as 10%. Reduced intake air temperatures result in 9)5218"5)177,18"1411)"1S8+1+S7,71+77Y>177,178"1411)"1S81)1"7)1+)1+7"82 >X[better throttle response, maximizes spark advance, and overall increased torque and power. 71""1)"7)5""1)1+858+0S10S-1++81)417228,1187521)18,)11+17"5)77118785M1)2 X(Autospe&>7"5+81"2 ed Performance)1791)5)S18-1& 2  b; 2 ) , b;-2 4)7'- 2  b8-[2 X5Radically reduces the heat transfer from the cylinder0>17,12)187,1+"71811"")18+1))5S"71,3871):2   head to the intake manifold. 7117"5"718"141S1857K#2 =gives you up to 121+25778"52  XW5% more power from your engine by reducing the temperature of the incoming air to your 7YS5)185M1))5S357)1818172)177,81"71"1S81)1"7)15"718,5S811)"5257)J2 X*engine. Your intake manifold will stay 3018181K957)8"141S1857M+"1287 2 p -b!2 50 F co87&6,5F2 'oler and your incoming air will stay 2051)187257)8,6S811)M+"1287 2 V-b!2 w30 F 88&62 X^cooler. you will be enjoying a more powerful, better performing ride. (NewSouth Performance),551)K257M711852811S5)185M1)771""1)81)5)S81)71&D1M257"791)5)S19,1& 2  b; 2 s , b;-2 5)7'- 2  b8- 2 XRb>2 Yeduce heat by stopping metal to metal contact between the intake manifold and the engine a177,1711"72+"58871S1"1"5S1"1,58"1,"71"M118"718!141S1857187"71181812 ] Xblock 75,42 ] ? K#2 ] reduce the heat )187,1"71711"d2 ] c;of the air entering your engine, making up to 5% more power5"711)18"1)81257*18181S148178"57YS5)185M1)2 ]  K2 ]   allow the h16M"71#2 Xintake manifold 8"141S1857:2 to perform like an intercooler."581)5)S41188"1),551) 2   b;2 H X_Average testing has shown a 25 degrees F drop and up to 35 degrees in some applications. (RAI >21)111"1+"8171++76M8177721)11+67)5818778"577712)11+8+5S1188,1"57+&>> 2 X Motorsport)R5"5)+85)"& 2 h b; 2 2, b;52 ,Claims for phenolic spacers 81S+5)87185,+81,1)+82 can be summarized as follows: ,1871+7SS1)-171+56M+ 2   b< 2 , b;-2 1)7'- 2   b8-2 X]They insulate the intake manifold from the cylinder head by an unknown amount, reducing heat ;7128+71"1"718"141S1857)5S"71-2871)7117721878486M81S578")177,81811"L2 X+transfer, or prevent conduction altogether.")18+1)5)8)1218",5877,"581"511"71) 2 t  b; 2 |X b;-2 2)7'- 2   b8-^2 X7By lowing the temperature of the intake manifold, by 25=25M81"71"1S81)1"7)15"718"141S18577277 2  -b"82  50F, in turn the temperature o7768"7)8"71"1S81)1"7)152  f the air "711)\2 gX6entering the engine will be lower, by either 10% or 2018"1)81"7118181M715M1)721"71)78Y5)77 2 gV -b"2 gx 30F.776 2 g1  b; 2 , b;-2 Q3)7'- 2 Q  b8-2 QX\The lower intake air temperature will give better throttle response, maximum spark advance, ;715M1)8"1411)"1S81)1"7)1M12171""1)"7)5""1)1+858+1R10S7S+81)418218,172 Xincreased torque and either 5o8,)11+17"5)7711871"71)7 2 D-b!J2 e*10 more hp at the crank, or 5% more power.87S5)1781""81,)1845)7YS5)186M1) 2  b; 2 <, b;-2 4)7'- 2   b8-(2 XBy extending the in=210"18781"718U2 1take runners there will be better low end torque.o"141)7881)+"71)1M7171""1)5M187"5)771 2   b; 2 &, b; 2 , b;-2 ,ResultsoB5.<%.- 2 :b 2  b: 2 , b;2 ,ROf these claims I decided to investigate the affect on intake air temperature and A"71+1,1S+ 71,727"5821+"11"1"7111,"588"1411)"1S81)0"7)1187#2 sintake manifold 8"141S18572 p,dtemperature. The small change in HP and TQ would require a dynometer for measurement and I was not "1S81)1"7)1;71+S1,718118E9187;AM577)177)118285S1"1)5)S11+7)1S18"187 M1+85"m2 ,Aprepared to pay for the multiple sessions that would be required. 8)181)17"58125)"71S7"81+1++58+"71"M57771)177)17 2   b< 2 [, b;-,2 ,Intake Air Temperature#<%6;5A.@5Y<5.6%;.5- 2 v:b 2  b< 2 E, b;-