chunky_nb
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Registered: 19th Jan 07
Location: Bridgend S.Wales
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right i want an astra gsi turbo, at some point when i can afford one lol, however at the moment id like to tune my car, i cant be arsed with throttle bodies but i would like to cam it and change the inlet along with a remap,
what would i need? ARPs? vernier pulleys?
how much is it likely to cost? gains?
[Edited on 30-09-2008 by chunky_nb]
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alan-g-w
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Registered: 9th Nov 07
Location: Glasgow
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quote:
Originally posted by chunky_nb
right i want an astra gsi turbo, at some point when i can afford one lol, however at the moment id like to tune my car, i cant be arsed with throttle bodies but i would like to cam it and change the inlet along with a remap,
what would i need? ARPs? vernier pulleys?
how much is it likely to cost? gains?
[Edited on 30-09-2008 by chunky_nb]
Doubt you would need ARP's with that set up. Vernier pulleys would help in the setting up of the cams though.
For cams and a remap you're looking at around £500 depending where you take it. An upgraded inlet (manifold) would prob cost around something like £250-300, depending on engine.
Gains from all of that would again depend on the engine you're putting the stuff on.
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broster
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Registered: 6th Dec 02
Location: Drives: E39
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depending which inlet you want it may be worth fitting arp's due to the manzel style inlets liking more rev's
vernier pullies are a must with cams IMO, but if keeping it on standard management you would need to look at the dbilis (sp) pullies
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alan-g-w
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Location: Glasgow
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quote:
Originally posted by broster
depending which inlet you want it may be worth fitting arp's due to the manzel style inlets liking more rev's
As in changing the manifold bolts? Never knew that 
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tom_simes
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Organiser: South Wales
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Registered: 12th Jan 05
Location: Undy, Newport Drives: Skoda Octavia vRS estate
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quote:
Originally posted by alan-g-w
quote:
Originally posted by broster
depending which inlet you want it may be worth fitting arp's due to the manzel style inlets liking more rev's
As in changing the manifold bolts? Never knew that
No, as in changing the rob bolts for ARP's, then the rev limit can be raised safely to make the most of the Mantzel.
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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go with after market management it will cost about the same to fit and map than mapping the standard ecu
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alan-g-w
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Registered: 9th Nov 07
Location: Glasgow
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quote:
Originally posted by tom_simes
quote:
Originally posted by alan-g-w
quote:
Originally posted by broster
depending which inlet you want it may be worth fitting arp's due to the manzel style inlets liking more rev's
As in changing the manifold bolts? Never knew that
No, as in changing the rob bolts for ARP's, then the rev limit can be raised safely to make the most of the Mantzel.
Take it you meant rod bolts, what do you mean by them?
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chunky_nb
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Registered: 19th Jan 07
Location: Bridgend S.Wales
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where would i get standalone/aftermarket management then,
so the agreement is ARP rod bolts to be safe, vernier pulleys, inlet manifold, cams... anyone suggest any cams? (kent,piper,Dbilas)??
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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there is also catcams, sbd cams and others too depends if you want off the shelf ones or custom one to suit your needs, as for the standalone management a lot of rolling road people will fit and map them.
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tom_simes
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Organiser: South Wales
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Registered: 12th Jan 05
Location: Undy, Newport Drives: Skoda Octavia vRS estate
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quote:
Originally posted by alan-g-w
quote:
Originally posted by tom_simes
No, as in changing the rob bolts for ARP's, then the rev limit can be raised safely to make the most of the Mantzel.
Take it you meant rod bolts, what do you mean by them?
Yea, mis-spelt it.
Rod bolts hold the bearing cap onto the bottom end of the piston and rod assembly, around the crank.
These ARP rod bolts are designed to withstand larger loads, which are generated from higher rpm's.
This in turn allows the engine to rev at higher revs without a rod bolt failing, which if it does normally ends catastrophically with what is known as throwing a rod, i.e. a rod smashing through the engine block, or at least severly damaging the bore.
For examples of an X16XE throwing a rod, see these:
That was Broster's engine, and actually was a snapped rod rather than a failed bolt, but the bolts held right up until 9000 rpm, whereas the rod didn't 
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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the thing is with arp bolts they do take higher stresses BUT they have a tendancy to snap right away, standard bolts will stretch first so you will be more likely to notice something wrong before they totally snap.
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alan-g-w
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Registered: 9th Nov 07
Location: Glasgow
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tom_simes - cheers for that buddy, always wondered what people meant when they went on about rod bolts.
Chunky, sorry for the shit advice 
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