Skip to content
Aussieveedubbers

engine modification help

0 likes
Share Share on Facebook Share on X Share on Reddit
Log in to reply

gavandrob Seriously Crusin Dubber

102 posts · joined Jan 2007 ·

#665767
hi there,
if got a 69 baja bug with 30 inch wheels on the back and i wanna upgrade my motor ive got a 1600 block and wanna take it out to either 1835cc or 1912cc would 1835cc not be enough or will i have to go to 1912cc plz help Rob

matberry Moderator Go hard or go home

8,114 posts · joined Mar 2006 ·

#665795
To go 1835 or 1915 you need to rebuild your engine, not just upgrade... so be prepared to spend a few $$$.

What condition is your 1600 ?

Maybe just get it going better?
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE

Craig Torrens 6 times Australian, 7 times State Hillclimb Class Champion

8,040 posts · joined Jan 2003 ·

#665799
Rob, best just to go straight to the 94mm P&B (1915cc)> Its the same $$ and amount of work, so you may as well just bypass the 1835. Beside not many people building 1835's anymore.


vw54 Administrator Always Waiting 4 Friday

16,723 posts · joined Aug 2002 ·

#665830
the 94mm barrels n pistons are the way to go but you will need 044 heads that have enough meat ( alloy casting ) around the chambers to allow them to be machined out to 94mm stock heads dont have enough alloy in this area

and besides you will need bigger inlet and exhaust valves as well
I read it on FACEBOOK so it must be true


http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630


http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099


http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603


http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409

gavandrob Seriously Crusin Dubber

102 posts · joined Jan 2007 ·

#665921
thanks for the help i was thinking of going 1915cc anyway my 1600cc engine ive got has new pitons and rings and a zenith carby but i still struugle and want more power the block ive got will be putting new bearings through it wat else will i need to do

in regaurds to 044 heads wat are they are they 1600 kombi heads or wat how can u tell

thanks rob

bond Veteran Volks Folk

2,456 posts · joined Jul 2003 ·

#665939
where are you located?

gavandrob Seriously Crusin Dubber

102 posts · joined Jan 2007 ·

#665944
u run 1915cc with stock heads? huh u havent had any problems with it have u?

im located in victoria, latrobe valley region

VWCOOL 23 Windows of Awesome

5,158 posts · joined Jun 2003 ·

#666013
Stock DP heads work with 1916 - they will need machining for the bigger barrel, but no other mods.
Pay your debts, CxxT

76bug Officially Full-On Dubber

215 posts · joined Feb 2005 ·

#666042
hi gavandrop i have an excelent set of 043 heads stock valves bored for 94mm barrels for sale, if your interested.

gavandrob Seriously Crusin Dubber

102 posts · joined Jan 2007 ·

#666085
will i need to do anything to the motor will the ports be big enough to produce the most power etc...

LIFE IN THE LOW LANE All people have the right to stupidity but some abuse the pr

2,534 posts · joined Mar 2007 ·

#666100
My brother has a set of 94mm pistons and barrels that have done like 2000km or less for sale. Pistons have brand new rings and a second hand set. Pistons can also be used with a stroker crank. Pm me if you are interested.
ACCEPT THAT SOME DAYS YOU ARE THE PIDGEON AND SOME DAYS YOU ARE THE STATUE

Alder Outlaws VW Racing - check it out on fb!!

Bizarre Moderator The artist formerly known as blue74l

12,789 posts · joined Aug 2002 ·

#666120
vw54 wrote:good luck using stock heads
Dave

Pretty sure Jak's motor use to run 040's.
Cant say that didnt work

Be VERY surprised if Stan Pobjoy uses 044's on his "base" 1916's

Admittedly 044's are better but 040/043 will work
Futue te ipsum!!!

hellbugged 48's and straight cuts

5,080 posts · joined Apr 2003 ·

#666123
i make plenty of HP with my 040's...........but they aint STOCK

onetrackwonder Casual Dubber

33 posts · joined Jun 2008 ·

#666220
Maybe you already have enough horsepower and you need tranny mods to suit the 30 inch wheels, cheers Greg
69 fastback daily driver gone, 66 beetle next resto job,
sold my 76 camper after 21 years years ago and now all the prices have gone up, moving and re building houses has slowed down VW love, Greg Martin

VWCOOL 23 Windows of Awesome

5,158 posts · joined Jun 2003 ·

#666222
vw54 wrote:good luck using stock heads
Two 1916s in my shed and the stock DP heads are fine. It's true some DP heads have less metal around the combustion chamber (liek one of mine) and as such can't be machined for high comp ratios (ie: too much for ULP) without breaking through to the fins

A nice torquey 1916 would be good in an off-road vehicle but with tall tyres, a Baja will benefit more from lower gearing than more power
Pay your debts, CxxT

vw54 Administrator Always Waiting 4 Friday

16,723 posts · joined Aug 2002 ·

#666223
such can't be machined for high comp ratios (ie: too much for ULP) without breaking through to the fins
yep thats what happened to mine had big valves and nice port job then machine to up comp and to 94 and went through the fins
I read it on FACEBOOK so it must be true


http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630


http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099


http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603


http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409

Craig Torrens 6 times Australian, 7 times State Hillclimb Class Champion

8,040 posts · joined Jan 2003 ·

#666275
vw54 wrote:good luck using stock heads
Stan Pobjoy has been using them (and still does) for the last 25 years.......................and a couple of thousand 1916's later !!

You just need to know what your looking for when sourcing the heads........some standard heads have the right castings others don't.

Pity you did the valves and port job before checking Dave !!


vw54 Administrator Always Waiting 4 Friday

16,723 posts · joined Aug 2002 ·

#666373
Pity you did the valves and port job before checking Dave !!
no they were cut for 92s which i never used so decided to cut for 94 n busted through there carnt be much meat using stocks after cutting must be very thin
I read it on FACEBOOK so it must be true


http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630


http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099


http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603


http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409

Craig Torrens 6 times Australian, 7 times State Hillclimb Class Champion

8,040 posts · joined Jan 2003 ·

#666519
use the right heads and there's plenty of meat 😉