Spruell Motorsport, Inc
  Spruell Motorsport Alfa » Catalog » Valve 2000 Race/Street Special Undersize 8mm Stem 38.5mm Exhaust My Account  |  Cart  |  Checkout   
Alfa Parts Categories
Alfa Romeo
Specials
Newest Products
Complete exploded Category listing
LANGUAGES
EnglishEnglish FrenchFrench SpanishSpanish
GermanGerman ItalianItalian PortuguesePortuguese
KoreanKorean JapaneseJapanese ArabicArabic GreekGreek TurkishTurkce
Recent Addition more
Rod Bearing Set Coated 1600-2000 .020
Rod Bearing Set Coated 1600-2000 .020
$50.00
View Latest Additions
Valve 2000 Race/Street Special Undersize 8x38.5mm 45 degree Exhaust each
[20008EVUS]
$0.00

This part is discontinued and no longer available. Please DO NOT try to order.

 

According to Jim K research undersize exhaust valves make better power than std 40 or oversize 41mm valve by reducing over-scavenging. Several customers have been successful , so we have produced these undersized valves by popular demand without our own testing.

  • The 1mm smaller stem allows better flow.
  • 20% lighter (21 grams) than the 1mm oversize 45x 9mm stem valves. This is worth power since the exhause seat pressure can be reduced.
  • 45 degree seating

For more information on valve sizing and cylinder head performance buy a copy of the Jim Kartalamakis book advertised at the top of this section.

  • NOTE: We can special order any valve size you decide is best for your engine.

Reviews
Customers who bought this product also purchased
Valve Spring Seat Retainer--Washer (EACH)
Valve Spring Seat Retainer--Washer (EACH)
Valve Spring Seat (EACH) CNC Machined These are precision CNC machined from 4130 steelRetainer--Lower
Valve Spring Seat (EACH) CNC Machined These are precision CNC machined from 4130 steelRetainer--Lower
Liner Set (4) Ductile Iron 85mm Ultimate Strength
Liner Set (4) Ductile Iron 85mm Ultimate Strength
Camshaft STREET (Columbo & Bariani) 10.9mm Lift Mild Performance Increase
Camshaft STREET (Columbo & Bariani) 10.9mm Lift Mild Performance Increase
Filler Cap Early 1955-81 ALFAS
Filler Cap Early 1955-81 ALFAS
Aqua Pump All 101 1300 Engines 1959-1963
Aqua Pump All 101 1300 Engines 1959-1963
Shopping Cart more
0 items
Manufacturer Info
Other products
Notifications more
NotificationsNotify me of updates to Valve 2000 Race/Street Special Undersize 8x38.5mm 45 degree Exhaust each
Quick Find
 
Use keywords to search for Alfa Parts.
Advanced Search
Information
*Login/cart trouble*
Shipping & Returns
Conditions of Use
Links of Interest

Copyright © 2007 - 2019 Spruell Motorsport, Inc
Powered by osCommerce (v2.2-MS2)
Spruell Motorsport Alfa is your source for performance parts for Alfa Romeo.
We specialize in Alfa Romeo 101, 105 and 115 drive train products for engine and gearbox.
We keep our prices as low as possible, but the current market is very volatile. Please note that there will be times
when we just cannot absorb an increase and the price we get back to you with will be higher than the catalog shows.
We reserve the right to correct errors in website data entry affecting pricing.
International orders under $100 are subject to a $20 USD handling fee and for PayPal, add 2.5% to total. (add 4.5% in USA.)
NOTE that WE MUST SEND Paypal payment requests from our PP account to your email address. Shipping will be added to the total shown on your invoice.