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 871 Posts Member #: 2590 Post Whore Croydon |
17th Feb, 2009 at 09:37:41pm
hi i have started collecting parts again for my 998 i needed the money before
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 2633 Posts Member #: 1246 Post Whore Lowestoft, Suffolk. |
17th Feb, 2009 at 10:46:53pm
A good search in this section would answer most of your questions. Head work can be done by Steve on here (Benross) excelent service and quality of work. Cam choice, kent 266 seems popular, has been some thought / talk that the sw5 may work well, also std metro cam. As for BHP depends on boost level which you will be governed by you CR, aim for 8.4:1, I believe there are a few cars on here running 10psi and not too shy off 100bhp (somone correct me if im wrong, please). Why megasquirt? are you thinking of efi later? If not megajolt is ample. As for trigger wheels, again a search WILL come up trumps, Tom fenton may have a batch to sell, but cannot confirm.
Edited by shane on 17th Feb, 2009. |
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 7765 Posts Member #: 74 I pick holes in everything.. Chief ancient post excavator |
17th Feb, 2009 at 10:50:06pm
Instead of running a decompression plate ( Which is junk) get the CR lowered properly. You might even consider finding a 295 head. On 13th Jul, 2012 Ben H said:
Mine gets in the way a bit, but only when it is up. If it is down it does not cause a problem. |
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871 Posts Member #: 2590 Post Whore Croydon |
17th Feb, 2009 at 11:13:44pm
i am not to keen on using a 295 head as there close to 100 pound and i would rather pocket the block as i might need to remove the turbo at some point and would like to run a 1275 head on my 998
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 2406 Posts Member #: 341 aka T2clubby South Staffs |
17th Feb, 2009 at 11:38:03pm
If you are worried about spending £100 on a cylinder head I suggest you turn around and walk away from the idea of turbocharging.
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2633 Posts Member #: 1246 Post Whore Lowestoft, Suffolk. |
17th Feb, 2009 at 11:57:05pm
On 17th Feb, 2009 t2clubby said:
If you are worried about spending £100 on a cylinder head I suggest you turn around and walk away from the idea of turbocharging. Also you started by saying about megasquirt, and now your asking weather to use a dizzy? Shane |
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 9812 Posts Member #: 332 Resident Cylinder Head Modifier Mitsi Evo 7, 911, Cossie. & all the chavs ...... won no problem |
18th Feb, 2009 at 12:43:33am
turbochargings the way to go once you go turbo you NEVER go back
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 1424 Posts Member #: 2810 Formally spanner181187 Dublin, Ireland |
18th Feb, 2009 at 01:38:55pm
Thats not much of an "idea" to be honest. Whay do you want megasquirt if your using a metro turbo carb? Megajolt is what most use for ignition but if you won't spend £100 on a head then you won't like paying for Megajolt. Lots of people have started making trigger wheels recently so you obviously haven't been looking hard enough.
On 12th Nov, 2009 Paul S said:
I think Gary OS has taken over my role as the forum smart arse  On 30th Apr, 2010 Rod S said:
Gary's description is best |
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 9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
18th Feb, 2009 at 02:06:45pm
On 18th Feb, 2009 GaryOS said:
Thats not much of an "idea" to be honest. Whay do you want megasquirt if your using a metro turbo carb? Megajolt is what most use for ignition . Actuall Megasquirt has lots of advantages ove Megajolt, even if you are only using the ignition part. It has loads more inputs and outputs for monitoring etc. On 18th Feb, 2009 GaryOS said:
For a cam, as Shane said either a Metro NA (available new as a Kent 255) or SW5. The Kent equivalent is 500 Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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 1346 Posts Member #: 2340 Post Whore Dublin Ireland |
18th Feb, 2009 at 02:14:21pm
Will how much did your megaSquirt end up costing Im well intrested in giving it a shot on the racer this year I know you only use it for the ignition does it have its one coil drive or is that something you have to buy ?,
On 17th Feb, 2009 Rob H said:
I find the easiest way is to super glue the bolt to the end of one of my fingers. ______________________________________________________ |
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9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
18th Feb, 2009 at 03:53:38pm
You can use the MS direct to the coil, but we still use an EDIS. In total they cost less than £100 all fitted and working. But we bought lots and saved a bit of money. Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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 3329 Posts Member #: 184 Senior Member Melton Mowbray, Pie Country |
18th Feb, 2009 at 07:36:28pm
Just to add to the above, we use the MS for puel pump control, shift light, Lambda. We have the option to add two temperature inputs for engine and air, then various other bits like TPS. We can connect it up to a palm for a half decent dashboard as well. So all in all well worth it over the MJ IMO. http://www.twin-turbo.co.uk
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1424 Posts Member #: 2810 Formally spanner181187 Dublin, Ireland |
18th Feb, 2009 at 09:12:27pm
On 18th Feb, 2009 wil_h said:
Actuall Megasquirt has lots of advantages ove Megajolt, even if you are only using the ignition part. It has loads more inputs and outputs for monitoring etc. While I am aware of the differences between MJ and MS (well, vaugely) I just thought that it was unusual that someone asking basic spec build questions would want MJ. I just thought he got his terms mixed up And I did just cock up the cam info :$ On 12th Nov, 2009 Paul S said:
I think Gary OS has taken over my role as the forum smart arse On 30th Apr, 2010 Rod S said:
Gary's description is best |
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9258 Posts Member #: 123 Post Whore Betwix Harrogate and York |
19th Feb, 2009 at 09:54:08am
On 18th Feb, 2009 GaryOS said:
On 18th Feb, 2009 wil_h said:
Actuall Megasquirt has lots of advantages ove Megajolt, even if you are only using the ignition part. It has loads more inputs and outputs for monitoring etc. While I am aware of the differences between MJ and MS (well, vaugely) I just thought that it was unusual that someone asking basic spec build questions would want MJ. I just thought he got his terms mixed up Considering we're dealing with blister and his never ending questions on the same subject, I think you are right that he probaby wants MJ rather than MS. Fastest 998 mini in the world? 13.05 1/4 mile 106mph
On 2nd Jan, 2013 fastcarl said:
the design shows a distinct lack of imagination, talk about starting off with a clean sheet of paper, then not bothering to fucking draw on it,lol On 20th Apr, 2012 Paul S said:
I'm mainly concerned about swirl in the runners caused by the tangential entry. |
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 (2)[/url] by [url=https://www.flickr.com/photos/150672766@N03/]Rod Sugden[/url], on Fli) 5988 Posts Member #: 2024 Formally Retired Rural Suffolk |
19th Feb, 2009 at 10:15:31am
On 18th Feb, 2009 PaulH said:
Will how much did your megaSquirt end up costing Im well intrested in giving it a shot on the racer this year I know you only use it for the ignition does it have its one coil drive or is that something you have to buy ?, regards, Paul I know I'm not Wil..... but I bought mine in kit form direct from the States about a year ago. At that time ($2 to £1) it was a lot cheaper than sourcing it in the UK. DIYautotune are the biggest suppliers out there and regularly ship to the rest of the world, but there are others. Not sure of their current price, look at their website. In standard form it drives a single coil or EDIS (for a coilpack) but with a very simple change internally and using the "Extra" code, it will drive a coilpack direct. There are a couple of people who build them "to order" in the UK to whatever spec you want, I just chose to do it myself. As well as the additional bits Wil and Ben have mentioned, thanks to the excellent work by Jean (see the injection specific parts of the forum) we now have a real way forwards with multipoint, direct port, fuel injection as well. Edited by Rod S on 19th Feb, 2009. Schrödinger's cat - so which one am I ??? |
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871 Posts Member #: 2590 Post Whore Croydon |
28th Feb, 2009 at 01:02:38pm
oi lol i know i have alot of questions i have still read over my last posts lol dont be nasty
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444 Posts Member #: 2885 Senior Member |
1st Mar, 2009 at 10:46:31pm
About 12psi with a T2 and decent intercooling. To me that qualifies as 'alot of boost'. If its a road engine, and you dont want it to blow up often. |
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