1.4 XSI engine to a 1.6 S2 rallye engine

[Crooksey]

Is it worth it?

Facts and figures show they both produce the same bhp.

I was looking to cam it, rebuild with new internals, port + polish head and maybe TB and supercharge it.

I was just wondering if its worth doing all this work on an S2 rallye lump, or just do it on my standard XSI block.

I decided I want to keep the XSI 8V and thought the rallye block would be best.

Just wondered if it was worth the purchase price of a new engine, or just work on the XSI lump.

Cheers.

[Mattyboy]

I was looking to cam it, rebuild with new internals, port + polish head and maybe TB and supercharge it.

Sounds like my engine bar the Throttle bodies! :)

Best thing is to get another engine to work on makes it alot easier, means the car's off the road for less time! :)

[Crooksey]

The XSI isnt my main car, its a project car so it can be off the road as long as I need it. I just wondered if the Rallye lump will be any better than the XSI lump?

I think from what people said about the two it will be.

Im not going to bother with a 1.3 rallye box, because the xsi box I have has practically the same ratio's.

[Jack]

Well worth it imo..

I just bought a VTR engine off ebay with 43,000miles 2003 for just £41.00!! bargain!
my project for the next few months :p

16v is just greedy!

[j106]

1.4 in the lower tax band so you save £80 a year on tax, 1.6 engine probs has more tuning potential

[Nick]

Well worth it imo..

I just bought a VTR engine off ebay with 43,000miles 2003 for just £41.00!! bargain!
my project for the next few months :p

16v is just greedy!



:eek:

[Crooksey]

1.4 in the lower tax band so you save £80 a year on tax, 1.6 engine probs has more tuning potential

The XSI is probably isnt in the same tax band as a normal 1400.

Plus tax is the least of my concerns!

[ATFoxy 106]

Silvertop low milage bottom end on ur 1.4 head and u have the identical car pal with more torque! and possibly more power as i think the cam in the 1.4 xsi is better than that in the rally

with the silvertop VTR bottom end u have the same engine as me basically

[RallyeDan]

^foxy knows his shit lol Why not bang in the 1.6 bottom end with a 1.3 Rallye head. Ported and polished by Foxy Racing:D

[Crooksey]

Silvertop low milage bottom end on ur 1.4 head and u have the identical car pal with more torque! and possibly more power as i think the cam in the 1.4 xsi is better than that in the rally

with the silvertop VTR bottom end u have the same engine as me basically

Is the 1.6 S2 rallye engine the same as the VTR engine then?

That sounds like a good idea, keep my XSI head, but ill be camming it anyway :p

[ATFoxy 106]

not much point in camming the XSI unless u have a re-map.. the first 2 stages of most companys cams are very similar to the XSI cam.. so its realy not wotrth the money unless u get the top of the range cam..

the XSI cam is a REAly good cam

the saxo silvertop bottom end is identical

however what u need to do is to

Move the oil filter on the silvertop VTR engine to where it is on ur XSI.. realy easy job .. PM me when u get round to doing it

u want to run the VTR bottom end off of your XSI engine loom so u need to change the cranksensor and fit a new oil pressure sensor. it is a realy easy job.. when u get roudn to doing it i will give u my moby number and i can offer serious help as i have just finished my above conversion now

[ATFoxy 106]

oh btw crooksey send ur head myway to be gasflowed if u fancy it. aidy and Dan are on the list to have it done by me i think.

[Crooksey]

Will do mate, thanks for all the help.

Is it worth replacing my 1.4 bottom end with the VTR bottom end?

Probably going to supercharge, so will be rebuilding with low comp pistons, and I was aiming to go for a VERY good cam ;)

[ATFoxy 106]

yeh then u wanna go with the VTR silvertop bottom end if i were u. easy to pic up on low milage. i dont have much of a clue about turboing and ow comp pistons at all but u wanna get ur rods out and lighten an balance them. and have ur crank forged if ur going for a supercharger as i can only persume it wont last long turbod without being forged!get ur fly lightend and balanced aswel.

when u get ur hands on ur silvertop engine u want to moove the oil filter on the silvertop engine to where it is on ur current engine it was mooved so that the cat could fit in the manifold. but if ur using ur current loom them u wanna moove the oil filter and the oil pressure gaugeto where it is on urs. there is one drain hole on the block that needs tapping and then a bolt putting in it there is no pressure there but tapping it and then using gasket sealer and a bolt is the best way to fix this imo. any more info just PM me again pal

[liaminllan]

if you are going for forced induction you do not want to fit a 1.6 bottom end to a 1.4 or 1.3 head as it will run to much compression!!! the best way to do it is use a whole 1.6 vtr or rallye engine and rebuild the internals to turbo spec mate. also the 1.6 rallye runs i wilder cam then the 1.4 xsi.
if i was doing this i would run a 1.6 vtr engine sc/tc with low comp pistons, and a steel crank, 285 cam, titanium valve springs, p&p head, s1 rallye inlet or tb's ,bigger injectors and a kms or omex to run it all.
there is no point in creating a hi compression hybrid engine to go and stick a set of low comp pistons in there the idea of a hybrid is higher compression!!!
what can also be made is a low compression hybrid like gina g has which is a 1.4 head on a 1.1 bottom end! the compression is low enough for him to run boost with no spacer gasket or low comp pistons on that!

rep please lol

[ATFoxy 106]

Good information. as i said earlier i know nothing of turbos as of yet :)

[liaminllan]

neither do i mate its just common knowledge to an engine builder :D

[Crooksey]

It seems that it may be going 16v now as i found a really cheap 16v engine just 20 miles down the road.

So plan on camming the valver, new con-rods, new pistons oversized with slight rebore on block.

Un sure if I want to boost the 16v yet, might just run standard block on bodies.

[ATFoxy 106]

Get rid of the ecu and run it on carbs..


well i dont claim to be an engine builder. i only know what i have learnt so far liam. its my dad who does the work

[Crooksey]

The ECU is locked, so i might just rebuild with high comp pistons and new rods and run it on carbs.

Thanks for all the help :D

[ATFoxy 106]

you will love the sound pal. its bludy easy to do.. if ur realy nice to Slammed 106 he is by far THE most helpful guy in the world...

[rich106]

get it on carbs mate they sound sex. how much is gasflowed head foxy

[pug51]

lol why would you want silvertop vtr over s2 rallye engne lol.
anyway im biased.
s2 rallye engine with 1.3rallye cam ftw
lol my car still leaves me speachless.

[ATFoxy 106]

all the bottom ends from s2 vtr s1 Vtr GTI XSI 1.6 are all the same....

rich if ur seriously interested PM me. im partway through finishing one to be sold. can do an exchange on it

[liaminllan]

the s1 and s2 rallye cams are the same i think, im sure sandy compaird them once on the RR. s2 rallye bottom end with a skimmed s1 head and inlet and the correct fueling and map will create a nippy cheap 8v engine

[hussy]

you can fit the S1 1.3 head onto the S2 1.6 lump?
what power increase you loking at?