Reply
 
Thread Tools Search this Thread
 
Old 25 June 2007, 13:02   #11
Member
 
Country: UK - England
Town: Bristol
Make: fletcher arrowbeu
Length: 5m +
Engine: johnson 175
MMSI: 235057234
Join Date: Mar 2005
Posts: 385
mhb100, do you get any prop ventilation or loss of power, especially when turning the boat at speed?
__________________

__________________
Tims Osprey is offline   Reply With Quote
Old 25 June 2007, 13:20   #12
Member
 
nikster's Avatar
 
Country: UK - England
Town: Cowes
Boat name: if only you knew!
Make: n/a
Length: 10m +
Engine: large
Join Date: May 2007
Posts: 227
being as it lives on a trailer - one of 3 options
1. disconnect engine and all cables etc and full repair or
2. undo bolts pull engine away from transom slide stainless plate in and rebolt on till end of season before performing 1 or
3. drill 3rd set of transom bolts into spare holes so that 6 bolts are holding it on till end of season - then perform option 1.

you should be crystal clear tho that being as you have now cut away you need to complete a temp glass repair otherwise as soon as water is in there - you will need to cut transom away completely and start again.....
__________________

__________________
nikster is offline   Reply With Quote
Old 25 June 2007, 13:32   #13
Member
 
Country: UK - England
Town: Bristol
Make: fletcher arrowbeu
Length: 5m +
Engine: johnson 175
MMSI: 235057234
Join Date: Mar 2005
Posts: 385
Is it just me but on looking at your pictures again there does not appear to be any engine mount bolts in the lower section of the engine mount?

top left hand picture i think shows this? probably wrong though just checking?
__________________
Tims Osprey is offline   Reply With Quote
Old 25 June 2007, 14:24   #14
Member
 
Country: UK - England
Town: Swindon
Boat name: Ballistic
Make: Ballistic
Length: 7m +
Engine: Yam 250 Yam 15
Join Date: May 2007
Posts: 138
Quote:
Originally Posted by Tims Osprey View Post
mhb100, do you get any prop ventilation or loss of power, especially when turning the boat at speed?
Yes, Tim i do lots. I usually have to trim down if i intend to make a quick turn, its *iss poor. It does drive really well normally and i dont get any strange vibrations when i accelerate upto its max of 30knts its really smooth

Why what are you thinking mate?
__________________
mhb100 is offline   Reply With Quote
Old 25 June 2007, 14:31   #15
Member
 
Country: UK - England
Town: Swindon
Boat name: Ballistic
Make: Ballistic
Length: 7m +
Engine: Yam 250 Yam 15
Join Date: May 2007
Posts: 138
Quote:
Originally Posted by Tims Osprey View Post
Is it just me but on looking at your pictures again there does not appear to be any engine mount bolts in the lower section of the engine mount?

top left hand picture i think shows this? probably wrong though just checking?

Tim heres a better picture - there are 2 bolts at the top and 2 at the bottom and i've done some checking on the history....

The original owner purchased from brand new in April 1999. The engine was 6 months old with 20hrs. As it has been serviced every year i have the honda history and it is a long shaft which is correct according to Zodiac. A laser 20 was fitted at that time - which might not be correct; too large?.The supplier was Outboard Services Lostwithiel Cornwall; who I'm assuming do what there doing so its not a novice DIY job. The engines alsways been in that position.

We purchased direct from the first owner (friend of a distant friend) who was not mechancial and left it to the engineers to look after so its not been messed with. Services have been done by the original suppliers and also some from a company called Pacer Marine Farnham several times.The engine does not appear to have been moved or altered in any way since fitment.

The bottomline is that this honda lumps been on their for the life of the boat. I have attached another photo now to show the whole engine - so hopefully someone else can confirm the heights looks right?

In which case its got to be down to poor construction?

Mark
Attached Thumbnails
Click image for larger version

Name:	142_4212.jpg
Views:	154
Size:	85.6 KB
ID:	27993  
__________________
mhb100 is offline   Reply With Quote
Old 25 June 2007, 14:41   #16
Member
 
Country: UK - England
Town: Bristol
Make: fletcher arrowbeu
Length: 5m +
Engine: johnson 175
MMSI: 235057234
Join Date: Mar 2005
Posts: 385
Quote:
Originally Posted by mhb100 View Post
Yes, Tim i do lots. I usually have to trim down if i intend to make a quick turn, its *iss poor. It does drive really well normally and i dont get any strange vibrations when i accelerate upto its max of 30knts its really smooth

Why what are you thinking mate?
excessive prop ventilation and loss of power usually means that the engine has been installed to high on the transom which i thought was the case, can't be 100% sure though without seeing it and taking some measurements, so get somebody else to look at it and see what they think? if i lived any closer i would come along myself to check it out, what is the measurement from the top of the transom to the hull from the middle?
__________________
Tims Osprey is offline   Reply With Quote
Old 25 June 2007, 14:53   #17
Member
 
Country: UK - England
Town: Bristol
Make: fletcher arrowbeu
Length: 5m +
Engine: johnson 175
MMSI: 235057234
Join Date: Mar 2005
Posts: 385
Trim the engine right down and measure the height of the cavitation plate to the bottom of the hull, is it level, just above or just under the hull?
__________________
Tims Osprey is offline   Reply With Quote
Old 25 June 2007, 14:54   #18
RIBnet supporter
 
yoyo's Avatar
 
Country: UK - England
Town: Warrington/Anglesey
Make: Menai 480SR.
Length: 4m +
Engine: Tohatsoooooooo 70hp
Join Date: Sep 2005
Posts: 665
Hi MHB 100,

Is the packing piece that is shown in your pictures the correct thickness? If it is slightly thinner than that "lip" it would put a large load in the area when the bolts are tightend, this could possibly cause the spliting. IMHO.
__________________
Yoyo.
---------------------------------------------------
life's full of ups "n" downs.
yoyo is offline   Reply With Quote
Old 25 June 2007, 15:09   #19
Member
 
Country: UK - England
Town: Swindon
Boat name: Ballistic
Make: Ballistic
Length: 7m +
Engine: Yam 250 Yam 15
Join Date: May 2007
Posts: 138
Quote:
Originally Posted by yoyo View Post
Hi MHB 100,

Is the packing piece that is shown in your pictures the correct thickness? If it is slightly thinner than that "lip" it would put a large load in the area when the bolts are tightend, this could possibly cause the spliting. IMHO.
Hi Yoyo

Just been and checked, Its not that thick but there is a gap about 3mm between the lip and engine bracket so its not touching or being compressed by the bolts at the moment

Mark
__________________
mhb100 is offline   Reply With Quote
Old 25 June 2007, 15:12   #20
Member
 
Country: UK - England
Town: Bristol
Make: fletcher arrowbeu
Length: 5m +
Engine: johnson 175
MMSI: 235057234
Join Date: Mar 2005
Posts: 385
It might be the prop though causing the ventilation, remember from a previous thread.
__________________

__________________
Tims Osprey is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 10:24.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.