[Diy_efi] Re: diy_efi TBI in boat

[Bill USN-1]

Some of my concerns would be.

1. Temp- the exhaust logs are water cooled along with the elbows.
So I would think a 3 wire sensor may be better for this application.
I always ran a min 180* thermostat any ways so the engine temp should
not be an issue.

2. water-The ideal would be in the dry exhaust prior to the elbow dump.
But some manifolds dump water straight from the manifold to the elbow
leaving no access to a dry port. You could close off 1 water jacket but
this may cause a hot spot in the manifold and increased temp in the
exhaust bellows. An inboard set up with risers before the elbow would
make an easier set up than some of the I/O's.

3. crossover- you are not sampling all cylinders so accuracy is
diminished.
Is it enough to worry about? 

4. boats are a lot of WO throttle so WB tuning may be a great help in
tuning. You could also go open loop full time and just use the WB to set
the calibration.

Just some of my thoughts on a marine conversion.
 

Bill
USN-1


-----Original Message-----
From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org]
On Behalf Of Wallace O. Powelle
Sent: Saturday, August 07, 2004 11:00 PM
To: diy_efi at diy-efi.org
Subject: [Diy_efi] Re: diy_efi TBI in boat

Do you think there is enough flow in the intake crossover to be
effective?
> Original message:
> Can you put it in the exhaust cross over on the intake?
>
> Bill
> USN-1
>
> -----Original Message-----
> From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org]
> On Behalf Of Wallace O. Powelle
> Sent: Saturday, August 07, 2004 10:26 PM
> To: diy_efi at diy-efi.org
> Subject: [Diy_efi] TBI in boat
>
> I'm going to put a TBI system of of a 305 chevy on my Volvo Penta 305.
> Any advice or words of warning would be appreciated. Should I be able
to
> get by with the factory prom, Is there a built in rev limit, does
anyone
> know of a source for a spacer to install O2 sensor between manifold &
> riser?  Thanx, Wallace


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