VansAirForceForums  
Home > VansAirForceForums

-POSTING RULES
-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.

  #1  
Old 06-22-2021, 01:15 AM
MalteJ MalteJ is offline
 
Join Date: Jul 2018
Location: Munich, Germany
Posts: 11
Default Thunderbolt vs. Standard IO-390

Hey guys,

I am looking for some detail pictures that show the differences between the Thunderbolt IO-390-EXP119 and the standard Lycoming YIO-390-A3B6.
The different air intake, fuel system etc.
Also I would like to know how does the RV-14's lower cowling differ between both versions?

Do you have some pictures?

Thanks a lot!

Malte
Reply With Quote
  #2  
Old 06-22-2021, 06:15 AM
DanH's Avatar
DanH DanH is online now
 
Join Date: Oct 2005
Location: 08A
Posts: 10,280
Default

The new cowl's air exits are the two fairings around the tailpipes, and a variable area door in a cover over what was formerly an open tunnel.

The intake changes are a revised fiberglass snorkel, an AFP FM200 injection, and the 390 C/D model's intake manifold, which has a larger inlet bore compared to the traditional integral plenum sump.
Attached Thumbnails
Click image for larger version

Name:	Cowl Off with Variable Exit.jpg
Views:	265
Size:	48.3 KB
ID:	12907  Click image for larger version

Name:	New Lower Cowl and Tunnel Cover.jpg
Views:	232
Size:	34.6 KB
ID:	12908  
__________________
Dan Horton
RV-8 SS
Barrett IO-390
Reply With Quote
  #3  
Old 06-22-2021, 04:50 PM
RV7ForMe RV7ForMe is offline
 
Join Date: Jul 2015
Location: Europe
Posts: 646
Default

Quote:
Originally Posted by MalteJ View Post
Hey guys,

Thunderbolt IO-390-EXP119 and the standard Lycoming YIO-390-A3B6.

Malte
Not sure it matters, but you can also get the new EXP119 in the NON Thunderbolt version (standard Lycoming). My buddy has it in the 14a.

There are quite a few changes. The Oil cooler is a bit changed. The Air intake is redesigned and also the the throttle body is now from Air Flow Performance. It's the gold looking thing on Dans picture.

The exhaust is different, hence the bottom cowl must be because of the new exhaust pipes.
The RV14a now has a cowl flap in the tunnel where the original exhaust was...

Based on the performance numbers. The difference is Huge!
__________________
VAF dues paid for 2021
RV7-A (N137MX Reserved) - Wings Started...
RV7-A - Rebuild Done - Flying!
Cessna Rocket 210HP - Best dang 172 Ever made! (sold)

Last edited by RV7ForMe : 06-22-2021 at 04:56 PM.
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 09:27 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.