GSXR throttle bodies on M40

[GrindCulture]

I've seen a few pics of people using gsxr carbs on m10s/m40s, so surely this would work in the same way as ITBs on an m40? how would you go about compensating for removing the AFM?

[78dude]

I had some plans to fit Throttle Bodies on a M40 when I drove a 316i but it isnt so easy to find a propper unit for it who works propperly and they arent so cheap

[chu346]

Boggbros should be able to make you a manifold adapter.

You could make an airbox and have the afm on the end or you'll need standalone engine management like megasquirt.

For the price of doing this you are on your way to a turbo conversion. Tylerma(sp) is selling his m40 turbo engine complete for around a grand.

or for the same price you could put in a 3.5 m30, or possibly 2.5 m50 engine, i wouldn't bother with the ITB's.

[GrindCulture]

I already have the throttle bodies, injectors etc. from the Suzuki as I helped a friend of mike break his when he smashed it. I'm also seeing if I can call in a few favours with people who can machine an adapter for me for next to nothing. So really the only thing I'll need to fork out for is the megasquirt.

To the engine swap thing, I can't really put a big engine in my car, as I'm only 19 and haven't even been driving for a year yet, I'll get raped on insurance. Plus I like the challenge of doing something a little different with my poxy little M40 and don't really fancy going down the engine swap route (not just yet anyway).

Thanks for the advice anyhoo!

[march109]

I already have the throttle bodies, injectors etc. from the Suzuki as I helped a friend of mike break his when he smashed it. I'm also seeing if I can call in a few favours with people who can machine an adapter for me for next to nothing. So really the only thing I'll need to fork out for is the megasquirt.

To the engine swap thing, I can't really put a big engine in my car, as I'm only 19 and haven't even been driving for a year yet, I'll get raped on insurance. Plus I like the challenge of doing something a little different with my poxy little M40 and don't really fancy going down the engine swap route (not just yet anyway).

Thanks for the advice anyhoo!

You are aware insurance will rape you anyway, they always do when you breathe on an engine even slightly.

[madaboutthe30]

Hey mate, sounds like a good idea, keep us posted on how u get on, im curious to see if you can get anymore power out of an M40

[GrindCulture]

I already have the throttle bodies, injectors etc. from the Suzuki as I helped a friend of mike break his when he smashed it. I'm also seeing if I can call in a few favours with people who can machine an adapter for me for next to nothing. So really the only thing I'll need to fork out for is the megasquirt.

To the engine swap thing, I can't really put a big engine in my car, as I'm only 19 and haven't even been driving for a year yet, I'll get raped on insurance. Plus I like the challenge of doing something a little different with my poxy little M40 and don't really fancy going down the engine swap route (not just yet anyway).

Thanks for the advice anyhoo!

You are aware insurance will rape you anyway, they always do when you breathe on an engine even slightly.

I've checked this, yeah it will effect it but it will be cheaper than even putting an m42 in my car

[march109]

When I was 20 I was qouted the same for a M40 and M42, insurance company considered both just 1.8L, have you tried phoning around??

Though your project seems awesome, it would be better if you did the same thing with an M42 more power and more valves to start with so more potential.

[GrindCulture]

When I was 20 I was qouted the same for a M40 and M42, insurance company considered both just 1.8L, have you tried phoning around??

Though your project seems awesome, it would be better if you did the same thing with an M42 more power and more valves to start with so more potential.

Good plan, I'd only checked with my current insurance company. If I can find an M42 for a reasonable price I'll probably go for that then. Cheers and I shall keep you posted as to how it goes

[agreen]

|What engine apart from the m3 is it that the m3 boddies fit is it the m10 ?

[GrindCulture]

What engine apart from the m3 is it that the m3 boddies fit is it the m10?

I'd imagine so as an S14 is essentially the same block as the M10 anyway.

[chu346]

|What engine apart from the m3 is it that the m3 boddies fit is it the m10 ?

Yeah the s14 is based on the m10. Quite alot of parts from the s14 fit the m10 with alittle modification such a dry sump kits.

GrindCulture - If you do the figures like:
manifold adapter 200
Standalone management 350+
Other small parts (airfilters, plenum, ducting etc)150+
+Tuning
+cam (to make it worth it)
If you didn't have the TB's you'd need to add that aswell (for anyone else considering it).

There's 700 for 10bhp, buy the turbo kit for a grand and your looking at +50 bhp minimum.

[agreen]

yeh i think one of the mods has a turbo engine for sale atm ,

Tbhi think if you wanna be diffrent go for it but like is said above it's gonna cost you belive me i know £350 for managment is very cheap also !!!!

emerals ecu is £800 ish alone then there is a custom loom , set up , more like £1500 !!

but it depends if you can do the work your self if you are wilin to do the work yourself and how handy you are with a laptop and the spanners .

. . . as for the m3 itb;s i was looking at a set yesterday on ebay they were at £46 for ages in the last few hours they rockted and sold for £174.00 as i recal .

with projexts like this and belive me i know you need a budget , whats yours .

you really need to decide on a budget and stick to it or belive me it gets way way way out of hand mate .

[GrindCulture]

I've worked out that I can get the throttle bodies, manifold, air filters (I'll use 4 little cone filters intead of an airbox) as well as all the silicone hosing/ducting etc. together for under £70. It's then just a case of the stand alone engine management and getting my cams re-ground, not sure how much that will cost? I'm willing to do as much of the work myself where possible. I'm going to have to get a parts list written up with prices so I can budget myself before I start buying things willy-nilly.

I've also got to work out if it's actually worth doing this on my M40 or spending that bit more on the M42 (which I'm now leaning more towards).

[agreen]

Well just for some figures , emerald ecu , custom loom , mapping , around £1500 , however there are more options for a diy install such as mega squirt etc but its up to you .

Cam regrinds are around £220 i think , but are you sure a re grind is the way to go ? ? ? Get in contact with cam surpliers and find out what the wildest cam you can fit in their is without changing springs etc , unless you want to head work of course but then it really does start getting expensivebelive me ,

As for the cone filters on the itb's there is no point in doing itb's imo all your hard work will be undone by the engine sucking in hot air , its the same story with sock type filters , i have done alot of research into this and there was a link on a thread not long ago where i read all this information from the researched it furthur to see if it was true and many other sites say the same things , i have also spoken to the cheif technical director of itg air filters in the uk where hey develop , test , and manufacture air filters of all types and he also said that you are wasting your time using socks what you really need i a plenum or the very best in his opinion was a maxiflow system , and once he had taken the time to explain it to me and the reasoning behind it i can see it is worth spending the extra money on , especially after all the hard working getting the itb's on in the first place so food for though , does push you budget up alot though just for the maxiflow

Have you also budgeted for the adaptor plate for the itb's if you are using one . ?

ps sorry for bad spelling i am in a rush .

[d6dph]

Buy Malcs turbo M40 and have a real grin on your face. It's a great set up.

[GrindCulture]

Yeah I've called in a favour from a mate who said he could machine the adapter for me at college, as long as I cover the cost of the materials.

I found this write up about a guy who put gsxr600 throttle bodies on his mx5, it's not finished yet though I don't think.

http://diymiata.com/irtb.htm

[agreen]

whats your budget mate , like dave said go with grin for £Â£Ã‚£ and its gota be the tubo engine all the hard work already done

[pacerpete]

A sows ear will never be a silk purse no matter how much you spend !

[d6dph]

Dunno Pete. I'm doing a good job with my sows quim.

[GrindCulture]

I don't want to spend any more than about £400 if I can. It'll be higher if i decide to get an M42.

[agreen]

£400 wont even get you decent managment no where close ! .

id go back to the drawing board if i were you , or the bank !

[alloyproducts]

you would need to run an aftermarket ecu with throttle bodies. mapping can be around £50-70 per hour, also you need to make sure the person mapping the car knows the software, otherwise you could spend £400+ on mapping alone.

[GrindCulture]

£400 wont even get you decent managment no where close ! .

id go back to the drawing board if i were you , or the bank !

As you can tell, I have no idea when it comes to prices of things that aren't mechanical...

[agreen]

As nigel (alloyproucts) said above you dont NEED aftermarket managment But its something else to consider ,

but lik he also said if he mapper does not know what they are doing with the product / software it could take a long time !!!

[james318i]

look up a firm called F1moto , based right near brands hatch in west kingsdown , he builds alot of trick bike parts which is how i know him but he does alot of drift cars aswell and i know hes fitted bike throttle bodies to tons of cars

[GrindCulture]

You got a phone number or email addy? Cheers.

I might just get myself a plenum and bung the AFM on the end of that for the time being til I have the cash etc. for megasquirt. Should work shouldn't it?

[agreen]

you going to custom make a plenum or try to mod an exsisting one ?

[GrindCulture]

If I can find an existing one with similar bores to the GSXR airbox, I'll modify it, if not I'll have to make one. I've read about a guy making one from a bike silencer for the bike TBs on his Suzuki Swift.

[agreen]

good luck mate . do you have the itb's already ? lets see some pictures mate . what size are the ports ?

[GrindCulture]

I don't have them here they're still on the bike atm, should be going to get them either tomorrow or tuesday. I think they're 48mm on the intake side and 40mm on the other, not sure though.

[alloyproducts]

unfortunatey its not just a case of bolting a plenum on the bodies. you need to consider the volume of the plenum and the size (lenghts)of the trumpets as this decides where the power is. longer trumpets =more torque lower down the rev range. also the shape of a plenum is very important as this determines how the air flows inside.

[GrindCulture]

Yeah, there is rather a lot to digest, I've been reading up on plenums and velocity stacks etc. I think I'm going to take some time in working out exactly what I need to do. It's been a while since I did fluid mechanics as part of my course at college, so I'm a bit rusty. After much deliberation I'm probably going to put this on hold for a bit, at least til I've got an M42 sorted out. In that time I'm going to sit down and work out all the specs I need for everything, rather than chucking it all together and getting it wrong. Thanks to everyone for your advice