98BHP head on 90BHP engine

30th July 2007, 10:06

I have a early mk2 saxo with the 90bhp silvertop engine. Does anyone know if a 98bhp head would fit and what would have to be changed if I did it?

Thanks a lot

30th July 2007, 12:16

it should go on mate, you are on about where the cams go right??

30th July 2007, 19:07

Yeh shud fit.....same size i think.....the 98bhp got extra 8bhp cos ECU? am i rite?

30th July 2007, 21:11

I'd expect so vtr-chris, the only difference is one cover is black and the other is silver iirc.

31st July 2007, 00:27

yeah mate think the ECU was programmed for more intake of fuel and air

31st July 2007, 00:49

and i think the injectors are different.....cos i got one of the last VTR's they made (2003) and the injector block looks alot different to the W reg 90bhp versions

I always wondered so will the later 98bhp versions be quicker then yeh? then the 90bhp ones?

31st July 2007, 00:56

well yeah

dont think theres that much difference though tbh

31st July 2007, 01:31

You will only notice the difference once you get going..But still not much tbh..

31st July 2007, 01:35

As std they will be the same cus the 98bhp version has a more restrictive exhuast system. MK1s are supposedly the fastst overall as theyre slightly lighter

31st July 2007, 12:37

ive got a black top 1998 guessing mark 1 is that the 98bhp or 90?

31st July 2007, 12:38

90 mate

31st July 2007, 12:40

ok cheers :\ all abit confusing lol

31st July 2007, 15:13

mines a black top 90bhp one, they're really perky when its a cool morning and you have little petrol in the tank, you can really tell the difference to a fuller tank!!

31st July 2007, 19:04

90 bhp 960kg 98bhp 1060 and 8 bhp difference

31st July 2007, 23:58

my VTR weighs 920kg and its a 98bhp version.........both weigh same according to Parkers lol

1st August 2007, 00:48

parkers talks shite

1st August 2007, 11:10

Quote:

Originally Posted by makaveli144

I have a early mk2 saxo with the 90bhp silvertop engine. Does anyone know if a 98bhp head would fit and what would have to be changed if I did it?

Thanks a lot

No, the inlet and ECU setup is not even close to the same. So it will bolt on the block but thats it. If you want a 98bhp engine the easy way is to swap everything from a 98bhp car including full engine, dash, ecu and loom. Well easiest is really just get the newer VTR. But the old VTRs are very easy to tune! So there is little point sticking the new one in if its power you are after.

3rd September 2007, 19:28

the head on my 90 bhp vtr is craked. my mate has a 98bhp engine in his garage which he would give my the head for free. i was thinking this would be ok if a kept my 90 bhp inlet etc with all the 90 bhp ecu and plugs.
Can you point me in the correct direction ax racing please

3rd September 2007, 23:56

Its a good plan but when you swap them over you will see your inlet will not fit.

4th September 2007, 09:31

Mine weighs 843kg and it aint stripped out that much....

Figure that out.

4th September 2007, 11:27

i was thinking cos they wer both silver tops the heads would be the same. the part wer the inlets conect to the head looks the same jst eyeing it up but awell.how would it not fit then is it sumthing daft. Nerly saved my self a bit of cash ther lol

4th September 2007, 13:55

Quote:

Originally Posted by Ben_Saxo

As std they will be the same cus the 98bhp version has a more restrictive exhuast system. MK1s are supposedly the fastst overall as theyre slightly lighter

yeah but he is on about a mk2 vtr which are heavier, people say you dont notice the difference between the 98bhp and the 90bhp.
You do, obv down to driver but 98's always used to slowly pull away from me

4th September 2007, 14:54

Quote:

Originally Posted by Steve_VTS

yeah but he is on about a mk2 vtr which are heavier, people say you dont notice the difference between the 98bhp and the 90bhp.
You do, obv down to driver but 98's always used to slowly pull away from me

totally agree a 98'er was slightly quicker than my 90 too.

4th September 2007, 15:12

Quote:

Originally Posted by Soulless

totally agree a 98'er was slightly quicker than my 90 too.

at last someone who agress with me on that

4th September 2007, 15:16

Quote:

Originally Posted by Reid

i was thinking cos they wer both silver tops the heads would be the same. the part wer the inlets conect to the head looks the same jst eyeing it up but awell.how would it not fit then is it sumthing daft. Nerly saved my self a bit of cash ther lol

If they look the same he may not have a 98bhp engine but really a 90bhp.

4th September 2007, 16:07

nah its defo 98 bhp one cos its the cat on mani and 3 plug out a 51 plate vtr. the tb are totaly diff but look like they could be swaped.before a do anything al get a right good look and miby try it and if i dont work al splash out on a new head. hope it works cos its a lot ae work haha

4th September 2007, 16:34

I agree with the whole 98 bhp's slightly quicker than the 90's..

I have played with both and the 98's have more pull in 3rd, 4th and 5th thn the 90's..

Not a huge amount you can notice it..

4th September 2007, 17:57

Quote:

Originally Posted by Reid

nah its defo 98 bhp one cos its the cat on mani and 3 plug out a 51 plate vtr. the tb are totaly diff but look like they could be swaped.before a do anything al get a right good look and miby try it and if i dont work al splash out on a new head. hope it works cos its a lot ae work haha

If its a 98bhp it will not fit a 90bhp inlet.

5th September 2007, 18:20

no prob then mate al jst source one fae the scrap yard cheers