748 749 engine swap?

Martinp · 17-Apr-2006, 17:06

I know that with enough money and time you could fit and thing into any chassis, never heard it been done just wondering if anyone else had? Does the engine bolt in or does it require frame mods? and what about electronics and fueling?

17-Apr-2006, 17:06

why ?? just curious ???

wilf · 17-Apr-2006, 17:37

way too much trouble for what you'll gain. if you're going to do it use a 998/999 motor but you'll have to do a TON of mod, including a frame mod.

I'm always up for a project but in this case the best advise has to be sell the 748 and buy a 998 imo.

raykay748R · 17-Apr-2006, 21:15

Better still buy a 749, junk the bodywork, swing arm etc etc and fit the parts from a 748!!! Whaddya reckon???

bolds · 17-Apr-2006, 21:23

Quote:

Originally posted by raykay748R

Better still buy a 749, junk the bodywork, swing arm etc etc and fit the parts from a 748!!! Whaddya reckon???

Yeh could do that and enter vintage runs then

Martinp · 21-Apr-2006, 02:10

Quote:

Originally posted by DIBBLE
why ?? just curious ???

Rockers!!!

skidlids · 21-Apr-2006, 02:43

May be worth giving a go if it was a 748R that you had with the larger engine mounts and the shower injection, otherwise as Wilf says there could be a huge amount of work and agro involved

cjsperf · 22-Apr-2006, 01:57

its a piece of cake...
engine
exausts
throttle bodies
then use the original 16m computer and loom to run it...

i have a stroked 1100cc stretta running on 748 management...

raykay748R · 22-Apr-2006, 09:52

Quote:

Originally posted by cjsperf
its a piece of cake...
engine
exausts
throttle bodies
then use the original 16m computer and loom to run it...

i have a stroked 1100cc stretta running on 748 management...

We need piccies, more details etc-----Please!!!

cjsperf · 23-Apr-2006, 13:42

i built the motor with a 2 phase 900ss lightened and balanced crank into a 998 deep sump cases.

stock pistons were milled to get the deck height correct leaving the center raised to gain more compression.

a combination of the piston modifications skimmimg the heads and the extra stroke gives a measured compression of 14.1

own port work on heads and r cams so 150 or more hp is in reach...

just a normal modified 748 ecu and loom running the 999 throttle bodies..

if you want pics pm me your e mail..

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode
Postbit Selector
		Use Vertical Postbit

17-Apr-2006, 17:06	#1
Martinp Registered Forum User Big Twin Posts: 1,062 Join Date: Sep 2005 Location: Solihull, Dorridge Mood: 748ish 748 749 engine swap? I know that with enough money and time you could fit and thing into any chassis, never heard it been done just wondering if anyone else had? Does the engine bolt in or does it require frame mods? and what about electronics and fueling? Reply

17-Apr-2006, 17:06	#2
Dibble Posts: n/a why ?? just curious ??? Reply

17-Apr-2006, 21:15	#4
raykay748R Registered Forum User Mille Bikes: 748R, ZXR 400 Posts: 298 Join Date: Jan 2006 Location: Bristol Mood: Glad to be back down south. Better still buy a 749, junk the bodywork, swing arm etc etc and fit the parts from a 748!!! Whaddya reckon??? Reply

21-Apr-2006, 02:43	#7
skidlids MotoGP God Posts: 18,275 Join Date: Apr 2002 Location: Oxford Mood: Its ONLY a Bike Club May be worth giving a go if it was a 748R that you had with the larger engine mounts and the shower injection, otherwise as Wilf says there could be a huge amount of work and agro involved Reply

22-Apr-2006, 01:57	#8
cjsperf Registered Forum User Posts: 27 Join Date: Oct 2005 Location: bristol its a piece of cake... engine exausts throttle bodies then use the original 16m computer and loom to run it... i have a stroked 1100cc stretta running on 748 management... Reply