Printable Version | Subscribe | Add to Favourites
New Topic New Poll New Reply
Author: Subject: ST170 Inlet
adamswifty

posted on 4/4/16 at 02:26 PM Reply With Quote
ST170 Inlet

I purchased an ST170 engine with ecu, key, etc. on the basis I would install into my Tiger Avon build, thanks to Big Wasa's write up.

I did a crude engine test fit over the weekend and it looks like the inlet will not clear the chassis rails. I know I could go down the TB/aftermarket ECU path, though I quite like the idea of the standard ECU with fully controlled VVT.

I wont know for sure if the inlet will fit until the engine mounts arrive later in the week, assuming its doesn't. Do I have any other options that will let me retain the original ECU. I guess I will need a maf based inlet to run the original ECU, maybe a standard blacktop? i know I'll lose the variable inlet feature, will this reduce power considerably?


Description
Description

Description1
Description1


[Edited on 4/4/16 by adamswifty]

[Edited on 4/4/16 by adamswifty]

View User's Profile View All Posts By User U2U Member
coozer

posted on 4/4/16 at 03:19 PM Reply With Quote
Make a log type plenum that will fit the plastic part with the injectors on the head and bang the TB on wherever you have enough room.

Although if your steering shaft clears the OE manifold I'm sure there is enough room under the alternator bracket at the front of the engine for a mount.





1972 V8 Jago

1980 Z750

View User's Profile Visit User's Homepage View All Posts By User U2U Member
big_wasa

posted on 4/4/16 at 06:46 PM Reply With Quote
That's not really an option ^^ if the ecu doesn't see the dual stage inlet doing its thing it knocks a good 20bhp of the top and puts the Mil light on.
View User's Profile View All Posts By User U2U Member
Your-nme

posted on 4/4/16 at 07:51 PM Reply With Quote
[img]http:// 2
2
[/img]

Maybe just modify the chassis?

View User's Profile View All Posts By User U2U Member
adamswifty

posted on 4/4/16 at 08:27 PM Reply With Quote
That's one way around it!, was hoping for less drastic options. Big Wasa, if I use an alternative inlet but keep the inlet controller connected, will this keep the ecu happy or is it more intelligent?
Even if that works, a 15-20 BHP drop negates the main benefit of using the standard ecu, etc. Looks like I may have to go TB, megasquirt and ME vvt controller.

[Edited on 4/4/16 by adamswifty]

View User's Profile View All Posts By User U2U Member
Rob Allison

posted on 4/4/16 at 09:33 PM Reply With Quote
You can take the outer section of the inlet off and turn it upside down.






View User's Profile View All Posts By User U2U Member
coozer

posted on 4/4/16 at 10:15 PM Reply With Quote
quote:
Originally posted by Rob Allison
You can take the outer section of the inlet off and turn it upside down.


It won't match!!!





1972 V8 Jago

1980 Z750

View User's Profile Visit User's Homepage View All Posts By User U2U Member
big_wasa

posted on 5/4/16 at 06:03 AM Reply With Quote
Yeah I think it does but the stabiliser bracket won't. Nothing that can't be sorted. I am not sure if it would gain anything on a 7.

You might get away with ditching the mani and just having the Imrc pull a spring so it thinks the manifold is opening and shutting.

This will alter mid range torque but with a 7 being less than half the weight of an st170 I could not say how much it would affect the drive.

View User's Profile View All Posts By User U2U Member
Rob Allison

posted on 5/4/16 at 07:42 PM Reply With Quote
quote:
Originally posted by coozer
quote:
Originally posted by Rob Allison
You can take the outer section of the inlet off and turn it upside down.


It won't match!!!


Yes it does

http://www.turbosport.co.uk/showthread.php?t=164271






View User's Profile View All Posts By User U2U Member
adamswifty

posted on 5/4/16 at 09:38 PM Reply With Quote
Upside-down inlet sounds like its worth a try, engine mounts are due tomorrow, once in I'll be able to see if that will solve the chassis clearance issue.
View User's Profile View All Posts By User U2U Member
adamswifty

posted on 6/4/16 at 08:35 PM Reply With Quote
Put the engine in place and test fitted the inlet upside down, it's not a direct fit as;

The inlets are not equally spaced
The idle control valve hits the fuel rail
The manifold hits the fuel rail inlet feed

All of these issues can probably be overcome with longer hoses and a mount? Though will need to check bonnet clearance.

Description
Description

Description
Description

Description
Description

Description
Description


[Edited on 6/4/16 by adamswifty]

View User's Profile View All Posts By User U2U Member

New Topic New Poll New Reply


go to top






Website design and SEO by Studio Montage

All content © 2001-16 LocostBuilders. Reproduction prohibited
Opinions expressed in public posts are those of the author and do not necessarily represent
the views of other users or any member of the LocostBuilders team.
Running XMB 1.8 Partagium [© 2002 XMB Group] on Apache under CentOS Linux
Founded, built and operated by ChrisW.